Sierra, Silverado 2006-2007

5.3L V8 VIN T Auto 3

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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: P0234



Turbocharger Engine Overboost

Trouble Code: P0299



Turbocharger Engine Underboost

Possible Causes:



A MAP sensor that is stuck at BARO, or is 40 kPa lower than desired while under boost, will cause this DTC to set. Use a scan tool and compare the MAP Sensor parameters to a known good vehicle. Operate both vehicles under various conditions.
 

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: P0301



Cylinder 1 Misfire Detected

Trouble Code: P0302



Cylinder 2 Misfire Detected

Trouble Code: P0303



Cylinder 3 Misfire Detected

Trouble Code: P0304



Cylinder 4 Misfire Detected

Trouble Code: P0305



Cylinder 5 Misfire Detected

Trouble Code: P0306



Cylinder 6 Misfire Detected

Trouble Code: P0307



Cylinder 7 Misfire Detected

Trouble Code: P0308



Cylinder 8 Misfire Detected

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: P0340



Camshaft Position (CMP) Sensor Circuit

Possible Causes:



An intermittent CMP sensor signal may cause DTC P0340 or P0341 to set. Wiggle the wiring harness with the engine running and observe the Cam Signal Missed parameter of the scan tool. If the parameter indicates anything other than 0, there is an intermittent condition.
 
If the CMP sensor signal is lost while running, the engine will operate normally. If the CMP sensor signal is not present on start-up, the engine will not start.
 

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: P0401



Exhaust Gas Recirculation (EGR) Flow Insufficient

Trouble Code: P0402



Exhaust Gas Recirculation (EGR) Flow Excessive

Trouble Code: P0403



Exhaust Gas Recirculation (EGR) Solenoid Control Circuit

Trouble Code: P0405



Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Voltage

Trouble Code: P0406



Exhaust Gas Recirculation (EGR) Position Sensor Circuit High Voltage

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.
 

 
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