Escalade, Suburban 1500 & 2500, Tahoe, Yukon, Yukon XL 1500 & 2500 (2006-2007), Yukon Denali and Yukon Denali XL (2005-2006)

6.0L V8 VIN U Auto 3

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Trouble Code: P0453



Fuel Tank Pressure (FTP) Sensor Circuit High Voltage

Trouble Code: P0454



Fuel Tank Pressure (FTP) Sensor Circuit Intermittent

Possible Causes:



Scan tool output controls, snapshot, and plot functions can help detect erratic sensor response. To look at the sensor signal under vacuum conditions, use snapshot and the purge/seal function to capture data while commanding purge to 20 percent, then plot the data to look for non-linear sensor operation. A similar inspection can be done for the pressure side of the sensor range by applying pressure with J 41413-200 Evaporative Emission System Tester (EEST) while taking a snapshot. DO NOT exceed 5 inches H2O when applying pressure.
 

Trouble Code: P0455



Evaporative Emission (EVAP) System Large Leak Detected

Possible Causes:



A fuel fill cap that is left OFF after a fuel fill will cause this DTC to set.
 
A loose, missing, or damaged fuel fill cap can cause this DTC to set.
 
A blockage or restriction in the EVAP purge solenoid, purge pipe EVAP canister, or vapor pipe, can cause this DTC to set.
 
A temporary blockage in the EVAP purge solenoid, purge pipe, or EVAP canister could cause an intermittent condition. Inspect and repair any restriction in the EVAP system.
 
To help locate intermittent leaks, use the J 41413-200 to introduce smoke into the EVAP system. Move all EVAP components while observing smoke with the J 41413-SPT .
 
To improve the visibility of the smoke exiting the EVAP system, observe the suspected leak area from different angles with the J 41413-SPT .
 
Observe the Freeze Frame/Failure Records vehicle mileage since the diagnostic test last failed may help determine how often the condition occurs that caused the DTC to set . This may assist in diagnosing the condition.
 

Trouble Code: P0461



Fuel Level Sensor 1 Performance

Possible Causes:



Use the Freeze Frame/Failure Records data in order to locate an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame/Failure Records data may help in determining the number of miles since the DTC set. The Fail Counter and Pass Counter can also help in determining the number of ignition cycles that the diagnostic test reported a pass and/or fail. Operate the vehicle within the same Freeze Frame conditions, including those for RPM, for engine load, for vehicle speed, for temperature, and for others. This will isolate at what point the DTC failed. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
 

Trouble Code: P0462



Fuel Level Sensor 1 Circuit Low Voltage

Possible Causes:



Use the Freeze Frame/Failure Records data in order to locate an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame/Failure Records data may help in determining the number of miles since the DTC set. The Fail Counter and Pass Counter can also help in determining the number of ignition cycles that the diagnostic test reported a pass and/or fail. Operate the vehicle within the same freeze frame conditions, including those for RPM, for engine load, for vehicle speed, for temperature, and for others. This will isolate at what point the DTC failed. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
 

Trouble Code: P0463



Fuel Level Sensor 1 Circuit High Voltage

Possible Causes:



Use the Freeze Frame/Failure Records data in order to locate an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame/Failure Records data may help in determining the number of miles since the DTC set. The Fail Counter and Pass Counter can also help in determining the number of ignition cycles that the diagnostic test reported a pass and/or fail. Operate the vehicle within the same freeze frame conditions, including those for RPM, for engine load, for vehicle speed, for temperature, and for others. This will isolate at what point the DTC failed. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
 

Trouble Code: P0464



Fuel Level Sensor 1 Circuit Intermittent

Possible Causes:



Use the Freeze Frame and/or Failure Records data in order to locate an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data may aid in determining the number of miles since the DTC set. The Fail Counter and Pass Counter can also aid in determining the number of ignition cycles that the diagnostic reported a pass and/or fail. Operate the vehicle within the same freeze frame conditions, i.e. RPM, engine load, vehicle speed, temperature, etc. This will isolate when the DTC failed.
 
Refer to Testing for Intermittent Conditions and Poor Connections .
 
If the DTC sets without a refueling event, refer to Fuel Gage Inaccurate or Inoperative .
 

Trouble Code: P0496



Evaporative Emission (EVAP) System Flow During Non-Purge

Trouble Code: P0502



Vehicle Speed Sensor (VSS) Circuit Low Voltage

Possible Causes:



DTC P0502 defaults to an elevated line pressure condition which may result in partial TCC apply. This may produce an idle surge that could stall the engine.
 

Trouble Code: P0502



Vehicle Speed Sensor (VSS) Circuit Low Voltage

Trouble Code: P0503



Vehicle Speed Sensor (VSS) Circuit Intermittent

Possible Causes:



DTC P0503 defaults to an elevated line pressure condition which may result in partial TCC apply. This may produce an idle surge that could stall the engine.
 

Trouble Code: P0503



Vehicle Speed Sensor (VSS) Circuit Intermittent

Possible Causes:



Inspect for ABS DTCs. A faulty ABS condition may contribute to setting DTC P0503.
 

Trouble Code: P0504



Brake Switch Circuit 1-2 Correlation

Possible Causes:



Aftermarket trailer brake controllers must be disconnected before diagnosing DTC P0504 due to they could result in incorrect diagnostics.
 
Check for intermittents and poor connections. Refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0506



Idle Speed Low

Trouble Code: P0507



Idle Speed High

Trouble Code: P0522



Engine Oil Pressure (EOP) Sensor Circuit Low Voltage

Possible Causes:



Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail. Refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0523



Engine Oil Pressure (EOP) Sensor Circuit High Voltage

Possible Causes:



Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records can help in determining how many miles since the DTC set. The Fail Counter and the Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail. Refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0530



Air Conditioning Refrigerant Pressure Sensor Circuit

Possible Causes:



For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0532



Air Conditioning Refrigerant Pressure Sensor Circuit

Possible Causes:



For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0533



Air Conditioning Refrigerant Pressure Sensor Circuit

Possible Causes:



For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0567



Cruise Control Resume Switch Circuit

Possible Causes:



Ensure that the Resume/Accel switch is not stuck or sticking in the engaged position.
 
For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0568



Cruise Control Set Switch Circuit

Possible Causes:



Ensure that the Set/Coast switch is not stuck or sticking in the engaged position.
 
For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0571



Cruise Control Brake Switch Circuit

Possible Causes:



Refer to Exterior Lighting Systems Description and Operation in order to avoid a misdiagnosis.
 
For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0601



Control Module Read Only Memory (ROM)

Trouble Code: P0602



Control Module Not Programmed

Trouble Code: P0603



Control Module Random Access Memory (RAM) Failure (6L50/6L80/6L90)

Trouble Code: P0604



Control Module Random Access Memory (RAM)

Trouble Code: P0605



Control Module Programming Read Only Memory

Trouble Code: P0606



Control Module Internal Performance

Trouble Code: P0607



Control Module Performance

Trouble Code: P0608



Vehicle Speed Output Circuit

Possible Causes:



Important: Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing/replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent water intrusion into the PCM. Using Freeze Frame and/or Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data can aid in determining how many miles since the DTC set. The Fail Counter and Pass Counter can also aid determining how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same freeze frame conditions (RPM, load, vehicle speed, temperature etc.) that you observed. This will isolate when the DTC failed. For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0641



5-Volt Reference 1 Circuit

Trouble Code: P0646



Air Conditioning (A/C) Clutch Relay Control Circuit Low Voltage

Trouble Code: P0647



Air Conditioning (A/C) Clutch Relay Control Circuit High Voltage

Trouble Code: P0650



Malfunction Indicator Lamp (MIL) Control Circuit

Trouble Code: P0651



5-Volt Reference 2 Circuit

Trouble Code: P0654



Engine Speed Output Circuit

Possible Causes:



Important: Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing/replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent water intrusion into the PCM. Using Freeze Frame and/or Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data can aid in determining how many miles since the DTC set. The Fail Counter and Pass Counter can also aid determining how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same freeze frame conditions (RPM, load, vehicle speed, temperature, etc.) that you observed. This will isolate when the DTC failed. For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0706



Transmission Range (TR) Switch Performance

Trouble Code: P0711



Transmission Fluid Temperature (TFT) Sensor Performance

Possible Causes:



DTC P0218 may set approximately 600 seconds (10 minutes) after DTC P0711 has set. Follow the diagnostic table for DTC P0711 before proceeding to the diagnostic table for DTC P0218.
 
DTC P0711 defaults to an elevated line pressure condition which may result in partial TCC apply. This may produce an idle surge that could stall the engine.
 

Trouble Code: P0711



Transmission Fluid Temperature (TFT) Sensor Performance

 
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