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

5.3L V8 VIN Z Auto 2

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Trouble Code: P0157



HO2S Circuit Low Voltage Bank 2 Sensor 2

Trouble Code: P0158



HO2S Circuit High Voltage Bank 2 Sensor 2

Trouble Code: P0160



HO2S Circuit Insufficient Activity Bank 2 Sensor 2

Trouble Code: P0161



HO2S Heater Performance Bank 2 Sensor 2

Trouble Code: P0171



Fuel Trim System Lean Bank 1

Trouble Code: P0172



Fuel Trim System Rich Bank 1

Trouble Code: P0174



Fuel Trim System Lean Bank 2

Trouble Code: P0175



Fuel Trim System Rich Bank 2

Trouble Code: P0200



Injector Control Circuit

Possible Causes:



Performing the Fuel Injector Coil Test may help to isolate an intermittent condition. Refer to Fuel Injector Coil Test .
 
For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0218



Transmission Condition Overtemperature

Possible Causes:



The scan tool Trans. Fluid Temp. should rise steadily to a normal operating temperature, then stabilize.
 
Ask about the customer's driving habits, trailer towing, etc. Trailer towing should occur in D3. Refer to Symptoms - Automatic Transmission .
 

Trouble Code: P0218



Transmission Condition Overtemperature

Possible Causes:



Verify the driving habits of the customer, such as trailer towing, etc.
 
The scan tool transmission fluid temperature (TFT) should rise steadily during warm-up cycles then stabilize.
 
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. Repair of the condition that set DTC P0711 will likely eliminate DTC P0218.
 

Trouble Code: P0220



Throttle Position (TP) Sensor 2 Circuit

Possible Causes:



Inspect the TAC module connectors for signs of water intrusion. If water intrusion occurs, multiple DTCs may set without any circuit or component conditions found during diagnostic testing.
 
When the TAC module detects a condition within the TAC system, more than one TAC system related DTC may set. This is due to the many redundant tests run continuously on this system. Locating and repairing one individual condition may correct more than one DTC. Disconnecting components during testing may set additional DTCs. Remember this if you review the stored information in Capture Info.
 
If this DTC is determined to be intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0230



Fuel Pump Relay Control Circuit

Trouble Code: P0300



Engine Misfire Detected

Possible Causes:



Excessive vibration from sources other than the engine could cause DTC P0300 to set. The following are possible sources of vibration:

Thickness variation of the brake rotors--Refer to Symptoms - Hydraulic Brakes .
 
The drive shaft not balanced--Refer to Vibration Analysis - Driveline .
 
Worn or damaged accessory drive belt--Refer to Symptoms - Engine Mechanical .
 

There may be more or less cylinders actually misfiring than indicated by the scan tool.Spray water on the secondary ignition components using a spray bottle. Look and listen for arcing or misfiring.If there are multiple misfires on only one bank, inspect the fuel injector and ignition coil, power and ground circuits for that bank. Refer to Engine Controls Schematics .
 

Trouble Code: P0315



Crankshaft Position (CKP) System Variation Not Learned

Trouble Code: P0325



Knock Sensor (KS) Circuit

Trouble Code: P0327



Knock Sensor (KS) 1 Circuit Low Frequency

Possible Causes:



Important: If the KS is dropped, the sensor must be replaced. Inspect the KS for proper installation. A knock sensor that is loose or over torqued may cause the DTC to set.
 
If DTCs P0327 and P0332 are set at the same time, inspect for poor connections at the KS harness jumper, located at the left rear side of the intake manifold.
 
For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0332



Knock Sensor (KS) 2 Circuit Low Frequency

Possible Causes:



Important: If the KS is dropped, the sensor must be replaced. Inspect the KS for proper installation. A knock sensor that is loose or over torqued may cause the DTC to set.
 
If DTCs P0327 and P0332 are set at the same time, inspect for poor connections at the KS harness jumper, located at the left rear side of the intake manifold.
 
For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0335



Crankshaft Position (CKP) Sensor Circuit

Trouble Code: P0336



Crankshaft Position (CKP) Sensor Performance

Trouble Code: P0341



Camshaft Position (CMP) Sensor Performance

Trouble Code: P0342



Camshaft Position (CMP) Sensor Circuit Low Voltage

Trouble Code: P0343



Camshaft Position (CMP) Sensor Circuit High Voltage

Trouble Code: P0351



Ignition Coil 1 Control Circuit

Trouble Code: P0352



Ignition Coil 2 Control Circuit

Trouble Code: P0353



Ignition Coil 3 Control Circuit

Trouble Code: P0354



Ignition Coil 4 Control Circuit

Trouble Code: P0355



Ignition Coil 5 Control Circuit

Trouble Code: P0356



Ignition Coil 6 Control Circuit

Trouble Code: P0357



Ignition Coil 7 Control Circuit

Trouble Code: P0358



Ignition Coil 8 Control Circuit

Trouble Code: P0381



Wait To Start Lamp Control Circuit

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. The wait to start indicator illuminates only with the ignition ON and the engine OFF. The wait to start indicator will not illuminate during post-start glow plug operation. The wait to start indicator will not stay ON for long at higher engine temperatures.
 

Trouble Code: P0420



Catalyst System Low Efficiency Bank 1

Possible Causes:



The catalyst test may abort due to a change in the engine load. Do not change the engine load, ensure the AC is OFF, the coolant fan is not cycling, while a catalyst test is in progress.
 
Driving the vehicle under the conditions outlined in the Inspection/Maintenance (I/M) section can verify whether the fault is present.
 
These conditions may cause a catalytic converter to degrade. Inspect for the following conditions:

An engine misfire
 
High engine oil or high coolant consumption
 
Retarded spark timing
 
A weak or poor spark
 
A lean fuel mixture
 
A rich fuel mixture
 
A damaged oxygen sensor or wiring harness
 
If an intermittent condition cannot be duplicated, the information included in Freeze Frame data can be useful in determining the vehicle operating conditions when the DTC was set.
 

The catalyst may have been temporarily contaminated with a chemical from a fuel additive, fuel contamination, or any of the above conditions.
 

Trouble Code: P0430



Catalyst System Low Efficiency Bank 2

Possible Causes:



The catalyst test may abort due to a change in the engine load. Do not change the engine load, ensure the AC is OFF, the coolant fan is not cycling, while a catalyst test is in progress.
 
Driving the vehicle under the conditions outlined in the Inspection/Maintenance (I/M) section can verify whether the fault is present.
 
These conditions may cause a catalytic converter to degrade. Inspect for the following conditions:

An engine misfire
 
High engine oil or high coolant consumption
 
Retarded spark timing
 
A weak or poor spark
 
A lean fuel mixture
 
A rich fuel mixture
 
A damaged oxygen sensor or wiring harness
 
If an intermittent condition cannot be duplicated, the information included in Freeze Frame data can be useful in determining the vehicle operating conditions when the DTC was set.
 

The catalyst may have been temporarily contaminated with a chemical from a fuel additive, fuel contamination, or any of the above conditions.
 

Trouble Code: P0442



Evaporative Emission (EVAP) System Small Leak Detected

Possible Causes:



To improve the visibility of the smoke exiting the EVAP system, observe the suspected leak area from different angles with the J 41413-SPT .
 
To help locate intermittent leaks using the J 41413-200 , move all EVAP components while observing smoke with the J 41413-SPT .
 
Individual components can be isolated and tested using J 41413-300 .
 
A condition may exist where a leak in the EVAP system only exists under a vacuum condition. By using the scan tool Purge/Seal function to create a vacuum, seal the system and observe the FTP parameter for vacuum decay. This type of leak may be detected.
 

Trouble Code: P0443



Evaporative Emission (EVAP) Purge Solenoid Control Circuit

Trouble Code: P0446



Evaporative Emission (EVAP) Vent System Performance

Possible Causes:



When using the Evaporative Emission System Tester (EEST) to apply pressure, you can regulate the amount of pressure by activating the remote switch ON and OFF while observing pressure in the EVAP system using a scan tool. DO NOT use more than 5 inches H2O. More than 5 inches H2O applied to the EVAP system can cause the canister vent solenoid valve to temporarily remain in the closed position, which could lead to misdiagnosis in this procedure.
 
An intermittent condition could be caused by a damaged EVAP vent housing, a temporary blockage at the EVAP canister vent solenoid valve inlet, or a pinched vent hose. A blockage in the vent system will also cause a poor fuel fill problem.
 
For intermittent conditions, refer to Testing for Intermittent Conditions and Poor Connections .
 
An EVAP canister, vent hose, or vent solenoid valve that has restricted flow may cause this DTC to set. Using a purge solenoid valve command with a scan tool will allow vacuum to be applied to the system instead of pressure. With the EVAP canister vent solenoid valve open and the EVAP canister purge solenoid valve commanded to 100 percent, vacuum should not increase to more than 9 inches H2O.
 

Trouble Code: P0449



Evaporative Emission (EVAP) vent Solenoid Control Circuit

Trouble Code: P0451



Fuel Tank Pressure (FTP) Sensor Performance

Possible Causes:



A restriction in the EVAP canister or vent lines could prevent fuel vapor pressure from bleeding off fast enough. If the vent system cannot bleed off pressure fast enough, this code can set. When pressure is applied to the system and released, a properly operating system will return to the atmospheric pressure rapidly. By using a scan tool and the J 41413-200 Evaporative Emission System Tester (EEST), pressure can be applied to the system, then released, while monitoring the FTP sensor parameter to see that pressure can be released within 30 seconds.
 
An FTP sensor that is skewed or does not have a linear transition from low to high may cause this code to set. Scan tool output controls, snapshot, and plot functions can help detect erratic sensor response. To test the sensor signal under vacuum conditions, use the Quick Snapshot and the Purge/Seal functions to capture data while commanding purge to 20 percent, then plot the data to look for erratic sensor operation. A similar test can be done for the pressure side of the sensor operation by applying pressure with the J 41413-200 while taking a snapshot.
 
A full fuel tank may cause misdiagnosis.
 
When using the electronic emission system tester (EEST) to apply pressure, you can regulate the amount of pressure by activating the remote switch ON and OFF while observing pressure in the EVAP system using a scan tool.
 

Trouble Code: P0452



Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage

 
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