Envoy, Rainer, Trailblazer 2006-2007

4.2L L6 VIN S Auto 2

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Trouble Code: P0130



HO2S Circuit Sensor 1

Trouble Code: P0131



HO2S Circuit Low Voltage Sensor 1

Trouble Code: P0132



HO2S Circuit High Voltage Sensor 1

Trouble Code: P0133



HO2S Slow Response Sensor 1

Trouble Code: P0134



HO2S Circuit Insufficient Activity Sensor 1

Trouble Code: P0135



HO2S Heater Performance Sensor 1

Trouble Code: P0136



HO2S Performance Sensor 2

Trouble Code: P0137



HO2S Circuit Low Voltage Sensor 2

Trouble Code: P0138



HO2S Circuit High Voltage Sensor 2

Trouble Code: P013A



HO2S Slow Response Rich to Lean Sensor 2

Trouble Code: P013B



HO2S Slow Response Lean to Rich Sensor 2

Trouble Code: P013E



HO2S Delayed Response Rich to Lean Sensor 2

Trouble Code: P013F



HO2S Delayed Response Lean to Rich Sensor 2

Trouble Code: P0140



HO2S Circuit Insufficient Activity Sensor 2

Trouble Code: P0141



HO2S Heater Performance Sensor 2

Trouble Code: P0171



Fuel Trim System Lean

Possible Causes:



Test for fuel contamination. Small amounts of water can be delivered to the fuel injectors and cause a lean exhaust indication. A lean exhaust indication can also be caused by too much alcohol in the fuel. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
 
The system will go lean if an injector is not supplying enough fuel.
 
A lean condition could be present during high fuel demand due to a fuel pump that does not pump enough fuel.
 
Review the Failure Records with a scan tool. If an intermittent condition is suspected, refer to Intermittent Conditions .
 

Trouble Code: P0172



Fuel Trim System Rich

Possible Causes:



Fuel contamination, such as water and alcohol, will affect the fuel trim.
 
The system will go rich if the injectors are supplying too much fuel.
 
Using the scan tool, review the Failure Records. If an intermittent condition is suspected , refer to Intermittent Conditions .
 

Trouble Code: P0172



Fuel Trim System Rich

Trouble Code: P0201



Injector 1 Control Circuit

Possible Causes:



Performing the Fuel Injector Coil test may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 
For an intermittent condition, refer to Intermittent Conditions .
 

Trouble Code: P0201



Injector 1 Control Circuit

Possible Causes:



Performing the Fuel Injector Diagnosis may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 

Trouble Code: P0202



Injector 2 Control Circuit

Possible Causes:



Performing the Fuel Injector Coil test may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 
For an intermittent condition, refer to Intermittent Conditions .
 

Trouble Code: P0202



Injector 2 Control Circuit

Possible Causes:



Performing the Fuel Injector Diagnosis may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 

Trouble Code: P0203



Injector 3 Control Circuit

Possible Causes:



Performing the Fuel Injector Coil test may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 
For an intermittent condition, refer to Intermittent Conditions .
 

Trouble Code: P0203



Injector 3 Control Circuit

Possible Causes:



Performing the Fuel Injector Diagnosis may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 

Trouble Code: P0204



Injector 4 Control Circuit

Possible Causes:



Performing the Fuel Injector Coil test may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 
For an intermittent condition, refer to Intermittent Conditions .
 

Trouble Code: P0204



Injector 4 Control Circuit

Possible Causes:



Performing the Fuel Injector Diagnosis may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 

Trouble Code: P0205



Injector 5 Control Circuit

Possible Causes:



Performing the Fuel Injector Coil test may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 
For an intermittent condition, refer to Intermittent Conditions .
 

Trouble Code: P0205



Injector 5 Control Circuit

Possible Causes:



Performing the Fuel Injector Diagnosis may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 

Trouble Code: P0206



Injector 6 Control Circuit

Possible Causes:



Performing the Fuel Injector Coil test may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 
For an intermittent condition, refer to Intermittent Conditions .
 

Trouble Code: P0206



Injector 6 Control Circuit

Possible Causes:



Performing the Fuel Injector Diagnosis may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis .
 

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 Fluid Overtemperature

Possible Causes:



The DIC, if equipped, will display TRANS HOT - IDLE ENGINE when the transmission fluid temperature reaches 132°C (270°F).
 
Ask the customer about possible overloading, exceeding the trailer towing limit, or towing in overdrive.
 
Refer to Symptoms - Automatic Transmission .
 

Trouble Code: P0220



Throttle Position (TP) Sensor 2 Circuit

Trouble Code: P0222



Throttle Position (TP) Sensor 2 Circuit Low Voltage

Trouble Code: P0223



Throttle Position (TP) Sensor 2 Circuit High Voltage

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.
 

Trouble Code: P0301



Cylinder 1 Misfire Detected

Possible Causes:



A misfire may only occur when the engine is under a load or when the engine is cold.
 
A misfire DTC could be caused by an excessive vibration from sources other than the engine. Inspect for the following possible sources:

A tire or wheel that is out of round or out of balance
 
Variable thickness brake rotors
 
An unbalanced drive shaft
 
Certain rough road conditions
 
A damaged accessory drive component or belt
 
A damaged reluctor wheel
 

 

Trouble Code: P0302



Cylinder 2 Misfire Detected

Possible Causes:



A misfire may only occur when the engine is under a load or when the engine is cold.
 
A misfire DTC could be caused by an excessive vibration from sources other than the engine. Inspect for the following possible sources:

A tire or wheel that is out of round or out of balance
 
Variable thickness brake rotors
 
An unbalanced drive shaft
 
Certain rough road conditions
 
A damaged accessory drive component or belt
 
A damaged reluctor wheel
 

 

Trouble Code: P0303



Cylinder 3 Misfire Detected

Possible Causes:



A misfire may only occur when the engine is under a load or when the engine is cold.
 
A misfire DTC could be caused by an excessive vibration from sources other than the engine. Inspect for the following possible sources:

A tire or wheel that is out of round or out of balance
 
Variable thickness brake rotors
 
An unbalanced drive shaft
 
Certain rough road conditions
 
A damaged accessory drive component or belt
 
A damaged reluctor wheel
 

 

 
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