Sierra, Silverado 2006-2007

6.0L V8 VIN N Auto 2

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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 1

Trouble Code: P0152



HO2S Circuit High Voltage Bank 2 Sensor 1

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: P0156



HO2S Performance Bank 2 Sensor 2

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

Trouble Code: P0171



Fuel Trim System Lean Bank 1

Possible Causes:



The 5.3L engine, VIN code Z, may use either 100% pure unleaded fuel or unleaded fuel containing up to 85% ethanol, or E85. Refer to Fuel System Description . This DTC can set if the learned alcohol content is not within 15% of the actual alcohol content in the fuel tank. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
 
Excessive resistance in the fuel injector control and/or the ignition 1 voltage circuits may cause the following symptoms:

Misfire
 
Rough idle Refer to DTC P0200 .
 

The system may become lean if an injector is not supplying 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

Trouble Code: P0172



Fuel Trim System Rich Bank 1

Possible Causes:



The 5.3L engine, VIN code Z, may use either 100% pure unleaded fuel or unleaded fuel containing up to 85% ethanol, or E85. Refer to Fuel System Description . This DTC can set if the learned alcohol content is not within 15% of the actual alcohol content in the fuel tank. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
 
Fuel contamination, such as water, 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

Trouble Code: P0174



Fuel Trim System Lean Bank 2

Possible Causes:



The 5.3L engine, VIN code Z, may use either 100% pure unleaded fuel or unleaded fuel containing up to 85% ethanol, or E85. Refer to Fuel System Description . This DTC can set if the learned alcohol content is not within 15% of the actual alcohol content in the fuel tank. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
 
Excessive resistance in the fuel injector control and/or the ignition 1 voltage circuits may cause the following symptoms:

Misfire
 
Rough idle Refer to DTC P0200 .
 

The system may become lean if an injector is not supplying 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

Trouble Code: P0175



Fuel Trim System Rich Bank 2

Possible Causes:



The 5.3L engine, VIN code Z, may use either 100% pure unleaded fuel or unleaded fuel containing up to 85% ethanol, or E85. Refer to Fuel System Description . This DTC can set if the learned alcohol content is not within 15% of the actual alcohol content in the fuel tank. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
 
Fuel contamination, such as water, 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 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: 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: 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:



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 .
 

 
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