P053F - Cold Start Fuel Pressure Performance Bank 1

Powertrain DTC Charts and Descriptions 4-79

Diagnostic Trouble Code (DTC) Charts and Descriptions

P053F - Cold Start Fuel Pressure Performance Bank 1

Description: The PCM monitors fuel rail pressure to control split injection. This DTC sets when the fuel rail pressure falls

outside a calibrated threshold limit for controlling split injection during a cold start.

Possible Causes: • Restricted fuel filter

• Restricted fuel supply line

• Damaged fuel pump assembly

• Damaged fuel injection pump

Diagnostic Aids: Diagnose any FRP and FVR circuit DTCs first.

Various engine driveability symptoms, including no start, hard start, rough idle, and backfiring may occur as a result of this DTC setting. This DTC may be accompanied by other DTCs, particularly P0087, P0088, or P00C6. Freeze frame data is not applicable to the cold start emission reduction monitor. For additional information, refer to Section 1, Cold Start Emission Reduction Monitor.

Application Key On Engine Off Key On Engine Running Continuous Memory

All GO to Pinpoint Test HP.

P054A - Cold Start Exhaust (B) Camshaft Position Timing Over-Advanced (Bank 1)

Description: This DTC sets when the variable camshaft timing (VCT) position is over-advanced during cold start up. This

DTC sets when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position.

Possible Causes: • Camshaft timing incorrectly set

• Continuous oil flow to the VCT piston chamber

• Variable camshaft timing bank 1 solenoid 2 (VCT12) valve stuck open

• Camshaft advance mechanism binding (VCT unit)

Diagnostic Aids: 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 Workshop Manual Section 303-00, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the Workshop Manual Section 303-01, Engine, Timing Drive Components, to check the engine timing.

Application Key On Engine Off Key On Engine Running Continuous Memory

All GO to Pinpoint Test HK.

P054B - Cold Start Exhaust (B) Camshaft Position Timing Over-Retarded (Bank 1)

Description: This DTC sets when the variable camshaft timing (VCT) position is over-retarded during cold start up. This DTC

sets when the camshaft timing exceeds a maximum calibrated value or remains in a retarded position.

Possible Causes: • Camshaft timing incorrectly set

• Continuous oil flow to the VCT piston chamber

• Variable camshaft timing bank 1 solenoid 2 (VCT12) valve stuck open

• Camshaft advance mechanism binding (VCT unit)

Diagnostic Aids: 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 Workshop Manual Section 303-00, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the Workshop Manual Section 303-01, Engine, Timing Drive Components, to check the engine timing.

Application Key On Engine Off Key On Engine Running Continuous Memory

All GO to Pinpoint Test HK.

P054C - Cold Start Exhaust (B) Camshaft Position Timing Over-Advanced (Bank 2)

Description: This DTC sets when the variable camshaft timing (VCT) position is over-advanced during cold start up. This

DTC sets when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position.

Possible Causes: • Camshaft timing incorrectly set

• Continuous oil flow to the VCT piston chamber

• Variable camshaft timing bank 2 solenoid 2 (VCT22) valve stuck open

• Camshaft advance mechanism binding (VCT unit)

Diagnostic Aids: 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 Workshop Manual Section 303-00, Engine System, Oil Pressure Test, to check the engine oil pressure. Refer to the Workshop Manual Section 303-01, Engine, Timing Drive Components, to check the engine timing.

Application Key On Engine Off Key On Engine Running Continuous Memory

2016 Powertrain Control/Emissions Diagnosis, Gasoline Engines, 3/2015