
2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on
this vehicle was towed in with no power. started with the basic checks, fuel pressure ok. checked exhaust for restrictions, no restrictions. scan for codes came up with the codes lised above. checked o2 operation , operates fine. checked for misfire, no fault ...
FIX posted 5/8/2007
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Message Closed
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VIN | 1GNET16SX3 |
Engine | 4.2 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Trouble Codes
P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
P0171 | Fuel System Too Lean (Bank 1) |
P0172 | Fuel System Too Rich (Bank 1) |
P0300 | Multiple Misfire Detected |
Message Closed
Vehicle Data
2003 Chevrolet Trailblazer North Face
VIN | 1GNET16SX3 |
Engine | 4.2 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Trouble Codes
P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
P0171 | Fuel System Too Lean (Bank 1) |
P0172 | Fuel System Too Rich (Bank 1) |
P0300 | Multiple Misfire Detected |