Sierra, Silverado 2006-2007

4.3L V6 VIN X Std 2

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Trouble Code: P0135



HO2S Heater Performance Bank 1 Sensor 1

Trouble Code: P0137



HO2S Circuit Low Voltage Bank 1 Sensor 2

Trouble Code: P0138



HO2S Circuit High Voltage Bank 1 Sensor 2

Trouble Code: P0140



HO2S Circuit Insufficient Activity Bank 1 Sensor 2

Trouble Code: P0141



HO2S Heater Performance Bank 1 Sensor 2

Trouble Code: P0151



HO2S Circuit Low Voltage Bank 2 Sensor 2

Trouble Code: P0152



HO2S Circuit High Voltage Bank 2 Sensor 2

Trouble Code: P0153



HO2S Slow Response Bank 2 Sensor 1

Trouble Code: P0154



HO2S Circuit Insufficient Activity Bank 2 Sensor 1

Trouble Code: P0155



HO2S Heater Performance Bank 2 Sensor 1

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: P0168



Engine Fuel Over-Temperature

Trouble Code: P0171



Fuel Trim System Lean Bank 1

Possible Causes:



Excessive resistance in the fuel injector control and/or the ignition 1 voltage circuits may cause the following symptoms:

A lean condition
 
Misfire
 
Rough idle Refer to DTC P0200 .
 

The system may become lean if an injector is not suppling enough fuel.A lean condition could be present during high fuel demand.Review the Failure Records with a scan tool. If an intermittent condition is suspected, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0171



Fuel Trim System Lean Bank 1

Possible Causes:



Excessive resistance in the fuel injector control and/or the ignition 1 voltage circuits may cause the following symptoms:

A lean condition
 
Misfire
 
Rough idle
 
Refer to DTC P0200 .
 

The system may become lean if an injector is not suppling enough fuel.A lean condition could be present during high fuel demand.Review the Failure Records with a scan tool. If an intermittent condition is suspected, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0172



Fuel Trim System Rich Bank 1

Possible Causes:



Fuel contamination, such as water or alcohol, will effect fuel trim.
 
A malfunctioning MAF sensor can cause a rich condition and set this DTC. Refer to DTC P0101 .
 
Review Failure Records with a scan tool. If an intermittent condition is suspected , refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0174



Fuel Trim System Lean Bank 2

Possible Causes:



Excessive resistance in the fuel injector control and/or the ignition 1 voltage circuits may cause the following symptoms:

A lean condition
 
Misfire
 
Rough idle Refer to DTC P0200 .
 

The system may become lean if an injector is not suppling enough fuel.A lean condition could be present during high fuel demand.Review the Failure Records with a scan tool. If an intermittent condition is suspected, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0174



Fuel Trim System Lean Bank 2

Possible Causes:



Excessive resistance in the fuel injector control and/or the ignition 1 voltage circuits may cause the following symptoms:

A lean condition
 
Misfire
 
Rough idle
 
Refer to DTC P0200 .
 

The system may become lean if an injector is not suppling enough fuel.A lean condition could be present during high fuel demand.Review the Failure Records with a scan tool. If an intermittent condition is suspected, refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0175



Fuel Trim System Rich Bank 2

Possible Causes:



Fuel contamination, such as water or alcohol, will effect fuel trim.
 
A malfunctioning MAF sensor can cause a rich condition and set this DTC. Refer to DTC P0101 .
 
Review Failure Records with a scan tool. If an intermittent condition is suspected , refer to Testing for Intermittent Conditions and Poor Connections .
 

Trouble Code: P0181



Fuel Temperature Sensor Performance

Trouble Code: P0182



Fuel Temperature Sensor Circuit Low Voltage

Possible Causes:



A short to a separate 5-volt source may set a DTC P0183.
 
A skewed sensor could result in poor driveability concerns.
 

Trouble Code: P0183



Fuel Temperature Sensor Circuit High Voltage

Possible Causes:



A short to a separate 5-volt source may set a DTC P0183.
 
A skewed sensor could result in poor driveability concerns.
 

Trouble Code: P0191



Fuel Rail Pressure (FRP) Sensor Performance

Trouble Code: P0192



Fuel Rail Pressure (FRP) Sensor Circuit Low Voltage

Trouble Code: P0193



Fuel Rail Pressure (FRP) Sensor Circuit High Voltage

Trouble Code: P0200



Injector Control Circuit

Possible Causes:



Performing the Fuel Injector Coil Test may help 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: P0201



Fuel Injector 1 Control Circuit

Trouble Code: P0202



Fuel Injector 2 Control Circuit

Trouble Code: P0203



Fuel Injector 3 Control Circuit

Trouble Code: P0204



Fuel Injector 4 Control Circuit

Trouble Code: P0205



Fuel Injector 5 Control Circuit

Trouble Code: P0206



Fuel Injector 6 Control Circuit

Trouble Code: P0207



Fuel Injector 7 Control Circuit

Trouble Code: P0208



Fuel Injector 8 Control Circuit

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:

Variable thickness brake rotors--Refer to Symptoms - Hydraulic Brakes .
 
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.
 

 
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