Lincoln Navigator: Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS) / Variable Camshaft Timing (VCT) System. Diagnosis and Testing

Lincoln Navigator 2018-2024 Workshop Manual / Engine / Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS) / Variable Camshaft Timing (VCT) System. Diagnosis and Testing

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Module	DTC	Description	Action
PCM	P0010:00	'A' Camshaft Position Actuator 'A' Control Circuit/Open Bank 1: No Sub Type Information	GO to Pinpoint Test HK
PCM	P0011:00	'A' Camshaft Position Timing - Over-Advanced (Bank 1): No Sub Type Information	GO to Pinpoint Test HK
PCM	P0012:00	'A' Camshaft Position Timing - Over-Retarded (Bank 1): No Sub Type Information	GO to Pinpoint Test HK
PCM	P0013:00	'B' Camshaft Position Actuator 'A' Control Circuit/Open Bank 1: No Sub Type Information	GO to Pinpoint Test HK
PCM	P0014:00	'B' Camshaft Position Timing - Over-Advanced (Bank 1): No Sub Type Information	GO to Pinpoint Test HK
PCM	P0015:00	'B' Camshaft Position Timing - Over-Retarded (Bank 1): No Sub Type Information	GO to Pinpoint Test HK
PCM	P0016:00	Crankshaft Position - Camshaft Position Correlation - Bank 1 Sensor A: No Sub Type Information	GO to Pinpoint Test HK
PCM	P0017:00	Crankshaft Position - Camshaft Position Correlation - Bank 1 Sensor B: No Sub Type Information	GO to Pinpoint Test HK
PCM	P0018:00	Crankshaft Position - Camshaft Position Correlation - Bank 2 Sensor A: No Sub Type Information	GO to Pinpoint Test HK
PCM	P0019:00	Crankshaft Position - Camshaft Position Correlation - Bank 2 Sensor B: No Sub Type Information	GO to Pinpoint Test HK
PCM	P0020:00	'A' Camshaft Position Actuator 'A' Control Circuit/Open Bank 2: No Sub Type Information	GO to Pinpoint Test HK
PCM	P0021:00	'A' Camshaft Position Timing - Over-Advanced (Bank 2): No Sub Type Information	GO to Pinpoint Test HK
PCM	P0022:00	'A' Camshaft Position Timing - Over-Retarded (Bank 2): No Sub Type Information	GO to Pinpoint Test HK
PCM	P0023:00	'B' Camshaft Position Actuator 'A' Control Circuit/Open Bank 2: No Sub Type Information	GO to Pinpoint Test HK
PCM	P0024:00	'B' Camshaft Position Timing - Over-Advanced (Bank 2): No Sub Type Information	GO to Pinpoint Test HK
PCM	P0025:00	'B' Camshaft Position Timing - Over-Retarded (Bank 2): No Sub Type Information	GO to Pinpoint Test HK
PCM	P0340:00	Camshaft Position Sensor 'A' Circuit (Bank 1 or single sensor): No Sub Type Information	GO to Pinpoint Test DR
PCM	P0344:00	Camshaft Position Sensor 'A' Circuit Intermittent (Bank 1 or single sensor): No Sub Type Information	GO to Pinpoint Test DR
PCM	P0345:00	Camshaft Position Sensor 'A' Circuit (Bank 2): No Sub Type Information	GO to Pinpoint Test DR
PCM	P0349:00	Camshaft Position Sensor 'A' Circuit Intermittent (Bank 2): No Sub Type Information	GO to Pinpoint Test DR
PCM	P0365:00	Camshaft Position Sensor 'B' Circuit (Bank 1): No Sub Type Information	GO to Pinpoint Test DR
PCM	P0369:00	Camshaft Position Sensor 'B' Circuit Intermittent (Bank 1): No Sub Type Information	GO to Pinpoint Test DR
PCM	P0390:00	Camshaft Position Sensor 'B' Circuit (Bank 2): No Sub Type Information	GO to Pinpoint Test DR
PCM	P0394:00	Camshaft Position Sensor 'B' Circuit Intermittent (Bank 2): No Sub Type Information	GO to Pinpoint Test DR
PCM	P052A:00	Cold Start Intake (A) Camshaft Position Timing Over-Advanced (Bank 1): No Sub Type Information	GO to Pinpoint Test HK
PCM	P052B:00	Cold Start Intake (A) Camshaft Position Timing Over-Retarded (Bank 1): No Sub Type Information	GO to Pinpoint Test HK
PCM	P052C:00	Cold Start Intake (A) Camshaft Position Timing Over-Advanced (Bank 2): No Sub Type Information	GO to Pinpoint Test HK
PCM	P052D:00	Cold Start Intake (A) Camshaft Position Timing Over-Retarded (Bank 2): No Sub Type Information	GO to Pinpoint Test HK
PCM	P054A:00	Cold Start Exhaust (B) Camshaft Position Timing Over-Advanced (Bank 1): No Sub Type Information	GO to Pinpoint Test HK
PCM	P054B:00	Cold Start Exhaust (B) Camshaft Position Timing Over-Retarded (Bank 1): No Sub Type Information	GO to Pinpoint Test HK
PCM	P054C:00	Cold Start Exhaust (B) Camshaft Position Timing Over-Advanced (Bank 2): No Sub Type Information	GO to Pinpoint Test HK
PCM	P054D:00	Cold Start Exhaust (B) Camshaft Position Timing Over-Retarded (Bank 2): No Sub Type Information	GO to Pinpoint Test HK

Global Customer Symptom Code (GCSC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom	Action
Start/Run/Move > Running > Failed Emissions Testing > Catalyst	GO to Pinpoint Test DR
Driving Performance > Runs Rough > Acceleration > Always	GO to Pinpoint Test HK
Driving Performance > Runs Rough > Cruise/ Steady Speed > Always	GO to Pinpoint Test HK
Driving Performance > Runs Rough > Deceleration > Always	GO to Pinpoint Test HK
Driving Performance > Runs Rough > All Running Modes > Always	GO to Pinpoint Test HK
Driving Performance > Idle Quality > Rolling > Always	GO to Pinpoint Test HK
Driving Performance > Idle Quality > Slow > Always	GO to Pinpoint Test HK
Driving Performance > Idle Quality > Slow Return > Always	GO to Pinpoint Test HK
Driving Performance > Idle Quality > Rough > Always	GO to Pinpoint Test HK
Driving Performance > Idle Quality > Rough > Always	GO to Pinpoint Test HK
Driving Performance > Stalls/Quits > At Idle > Always	GO to Pinpoint Test HK
Driving Performance > Lack/Loss of Power > Acceleration > Always	GO to Pinpoint Test DR
Driving Performance > Lack/Loss of Power > Acceleration > Always	GO to Pinpoint Test HK
Driving Performance > Lack/Loss of Power > Cruise/ Steady Speed > Always	GO to Pinpoint Test DR
Driving Performance > Lack/Loss of Power > Cruise/ Steady Speed > Always	GO to Pinpoint Test HK
Driving Performance > Poor Fuel Economy > City Driving > Loaded	GO to Pinpoint Test HK
Driving Performance > Poor Fuel Economy > Highway Driving > Loaded	GO to Pinpoint Test HK
Driving Performance > Poor Fuel Economy > Combined > Loaded	GO to Pinpoint Test DR
Driving Performance > Poor Fuel Economy > Combined > Loaded	GO to Pinpoint Test HK
Driving Performance > Hesitates/Stumble > Cruise/ Steady Speed > Always	GO to Pinpoint Test HK
Driving Performance > Hesitates/Stumble > Cruise/ Steady Speed > Always	GO to Pinpoint Test HK
Driving Performance > Engine Surge > At Idle > Always	GO to Pinpoint Test HK
Driving Performance > Engine Surge > Acceleration > Always	GO to Pinpoint Test HK
Driving Performance > Engine Surge > Cruise/ Steady Speed > Always	GO to Pinpoint Test HK
Driving Performance > Engine Surge > Deceleration > Always	GO to Pinpoint Test HK

Pinpoint Tests

PINPOINT TEST DR: CAMSHAFT POSITION (CMP) SENSOR

Introduction

Normal Operation and Fault Conditions

Refer to the DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PCM P0340:00	Camshaft Position Sensor 'A' Circuit (Bank 1 or single sensor): No Sub Type Information	Sets when the PCM detects the CMP bank 1, sensor 1, circuit signal cannot be detected. Harness routing, harness alterations, incorrect shielding, or electrical interference from other systems may have an intermittent impact on the CMP signal. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0344:00	Camshaft Position Sensor 'A' Circuit Intermittent (Bank 1 or single sensor): No Sub Type Information	Sets when the PCM detects the CMP bank 1, sensor 1, circuit signal is intermittent. Harness routing, harness alterations, incorrect shielding, or electrical interference from other systems may have an intermittent impact on the CMP signal. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0345:00	Camshaft Position Sensor 'A' Circuit (Bank 2): No Sub Type Information	Sets when the PCM detects the CMP bank 2, sensor 1, circuit signal cannot be detected. Harness routing, harness alterations, incorrect shielding, or electrical interference from other systems may have an intermittent impact on the CMP signal. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0349:00	Camshaft Position Sensor 'A' Circuit Intermittent (Bank 2): No Sub Type Information	Sets when the PCM detects the CMP bank 2, sensor 1, circuit signal is intermittent. Harness routing, harness alterations, incorrect shielding, or electrical interference from other systems may have an intermittent impact on the CMP signal. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0365:00	Camshaft Position Sensor 'B' Circuit (Bank 1): No Sub Type Information	Sets when the PCM detects the CMP bank 1, sensor 2 circuit signal cannot be detected. Harness routing, harness alterations, incorrect shielding, or electrical interference from other systems may have an intermittent impact on the CMP sensor signal. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0369:00	Camshaft Position Sensor 'B' Circuit Intermittent (Bank 1): No Sub Type Information	Sets when the PCM detects the CMP bank 1, sensor 2 circuit signal is intermittent. Harness routing, harness alterations, incorrect shielding, or electrical interference from other systems may have an intermittent impact on the CMP sensor signal. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0390:00	Camshaft Position Sensor 'B' Circuit (Bank 2): No Sub Type Information	Sets when the PCM detects the CMP bank 2, sensor 2 circuit signal can not be detected. Harness routing, harness alterations, incorrect shielding, or electrical interference from other systems may have an intermittent impact on the CMP sensor signal. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers
PCM P0394:00	Camshaft Position Sensor 'B' Circuit Intermittent (Bank 2): No Sub Type Information	Sets when the PCM detects the CMP bank 2, sensor 2 circuit signal is intermittent. Harness routing, harness alterations, incorrect shielding, or electrical interference from other systems may have an intermittent impact on the CMP sensor signal. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers

Possible Sources

Radio frequency interference or electromagnetic interference
CMP circuitry concern
Oil flow restriction
Camshaft phaser and sprocket
Camshaft timing
Camshaft position sensor alignment
CMP sensor (6B288 or 12K073)
PCM (12A650)

PINPOINT TEST HK: VARIABLE CAMSHAFT TIMING (VCT)

Introduction

Normal Operation and Fault Conditions

The PCM monitors and evaluates the response of the actual position on a target position change. The setpoint and camshaft position are saved at the beginning of a setpoint change. If this change over time is large enough (gradient), the camshaft phasing change is evaluated. If the change after the diagnostic time is smaller than a threshold, a slow response is detected, and if the value is greater, then there is no concern. By detecting a concern, an antibounce counter is incremented otherwise the counter is decremented.

Refer to the DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PCM P0010:00	'A' Camshaft Position Actuator 'A' Control Circuit/Open Bank 1: No Sub Type Information	Sets when PCM detects a low or high voltage on the VCT bank 1, solenoid 1 circuit is detected.
PCM P0011:00	'A' Camshaft Position Timing - Over-Advanced (Bank 1): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in an advanced position, indicating the VCT position is over-advanced. This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0012:00	'A' Camshaft Position Timing - Over-Retarded (Bank 1): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in a retarded position, indicating the VCT position is over-retarded. This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0013:00	'B' Camshaft Position Actuator 'A' Control Circuit/Open Bank 1: No Sub Type Information	Sets when PCM detects a low or high voltage on the VCT bank 1, solenoid 2 circuit or if the voltage exceeds a calibrated limit for a calibrated amount of time.
PCM P0014:00	'B' Camshaft Position Timing - Over-Advanced (Bank 1): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in an advanced position, indicating the VCT position is over-advanced. This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0015:00	'B' Camshaft Position Timing - Over-Retarded (Bank 1): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in a retarded position, indicating the VCT position is over-retarded. This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0016:00	Crankshaft Position - Camshaft Position Correlation - Bank 1 Sensor A: No Sub Type Information	Sets when PCM detects a misalignment between the camshaft and crankshaft. This indicates the misalignment is 1 tooth or greater. This DTC can also set due to VCT system concerns (oil contamination or VCT solenoid stuck). This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0017:00	Crankshaft Position - Camshaft Position Correlation - Bank 1 Sensor B: No Sub Type Information	Sets when PCM detects a misalignment between the camshaft and crankshaft. This indicates the misalignment is 1 tooth or greater. This DTC can also set due to VCT system concerns (oil contamination or VCT solenoid stuck). This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0018:00	Crankshaft Position - Camshaft Position Correlation - Bank 2 Sensor A: No Sub Type Information	Sets when PCM detects a misalignment between the camshaft and crankshaft. This indicates the misalignment is 1 tooth or greater. This DTC can also set due to VCT system concerns (oil contamination or VCT solenoid stuck). This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0019:00	Crankshaft Position - Camshaft Position Correlation - Bank 2 Sensor B: No Sub Type Information	Sets when PCM detects a misalignment between the camshaft and crankshaft. This indicates the misalignment is 1 tooth or greater. This DTC can also set due to VCT system concerns (oil contamination or VCT solenoid stuck). This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0020:00	'A' Camshaft Position Actuator 'A' Control Circuit/Open Bank 2: No Sub Type Information	Sets when PCM detects a low or high voltage from the VCT bank 2 solenoid 1circuit, indicating the voltage exceeded a calibrated limit for a calibrated amount of time.
PCM P0021:00	'A' Camshaft Position Timing - Over-Advanced (Bank 2): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in an advanced position , indicating the VCT position is over-advanced. This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0022:00	'A' Camshaft Position Timing - Over-Retarded (Bank 2): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in a retarded position, indicating the VCT position is over-retarded. This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0023:00	'B' Camshaft Position Actuator 'A' Control Circuit/Open Bank 2: No Sub Type Information	Sets when PCM detects the voltage exceeds a calibrated limit for a calibrated amount of time, indicating a low or high voltage from the VCT bank 2 solenoid 2 circuit.
PCM P0024:00	'B' Camshaft Position Timing - Over-Advanced (Bank 2): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in an advanced position, indicating the VCT position is over-advanced. This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P0025:00	'B' Camshaft Position Timing - Over-Retarded (Bank 2): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in a retarded position, indicating the VCT position is over-retarded. This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). Diagnose all CMP sensor Diagnostic Trouble Codes (DTCs) first. If no CMP sensor related Diagnostic Trouble Codes (DTCs) are present, continue to follow diagnosis for this DTC . This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P052A:00	Cold Start Intake (A) Camshaft Position Timing Over-Advanced (Bank 1): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in an advanced position, indicating the VCT position is over-advanced during cold start up. This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P052B:00	Cold Start Intake (A) Camshaft Position Timing Over-Retarded (Bank 1): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in a retarded position, indicating the variable camshaft timing (VCT) position is over-retarded during cold start up. This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P052C:00	Cold Start Intake (A) Camshaft Position Timing Over-Advanced (Bank 2): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in an advanced position, indicating the VCT position is over-advanced during cold start up. This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P052D:00	Cold Start Intake (A) Camshaft Position Timing Over-Retarded (Bank 2): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in a retarded position, indicating the VCT position is over-retarded during cold start up. This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P054A:00	Cold Start Exhaust (B) Camshaft Position Timing Over-Advanced (Bank 1): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in an advanced position, indicating the VCT position is over-advanced during cold start up. This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P054B:00	Cold Start Exhaust (B) Camshaft Position Timing Over-Retarded (Bank 1): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in a retarded position, indicating the VCT position is over-retarded during cold start up. This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P054C:00	Cold Start Exhaust (B) Camshaft Position Timing Over-Advanced (Bank 2): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in an advanced position, indicating the VCT position is over-advanced during cold start up. This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.
PCM P054D:00	Cold Start Exhaust (B) Camshaft Position Timing Over-Retarded (Bank 2): No Sub Type Information	Sets when PCM detects the camshaft timing exceeds a maximum calibrated value or remains in a retarded position, indicating the VCT position is over-retarded during cold start up. This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure or engine timing. Refer to the appropriate 303-00 section, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the appropriate 303-01 section, Engine, to check the engine timing and VCT phasers.

Possible Sources

Radio frequency interference
Oil pressure
Camshaft timing
VCT alignment
VCT phaser
VCT solenoid (6L713) or (6B297)
Left spider assembly (6C261)
Right spider assembly (6C260)

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