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2002 Chevrolet Trailblazer LS 4.2L Throttle
Hello everyone, we have this 2002 Trailblazer that keeps coming back with fault codes (P1221 excessive difference between throttle position sensors, P1271 excessive difference between acceleator pedal position sensors, P1635 5v ref. A circuit) The first time w...
Summary posted 3/21/2006
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Related Documents & Media | VIN | 1GNDT13S02 |
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Throttle |
| Occurs | Intermittently |
Trouble Codes
| P1221 | TP Sensor 2 1-2 Correlation |
| P1271 | Accelerator Pedal Position Sensor 1-2 Correlation |
| P1635 | 5-Volt Reference 'A' Circuit Malfunction |
Message Closed w/Summary
Vehicle Data
2002 Chevrolet Trailblazer LS
| VIN | 1GNDT13S02 |
| Engine | 4.2 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sefi |
| Emissions | OBD-II Compliant |
| Symptoms | Throttle |
| Occurs | Intermittently |
Trouble Codes
| P1221 | TP Sensor 2 1-2 Correlation |
| P1271 | Accelerator Pedal Position Sensor 1-2 Correlation |
| P1635 | 5-Volt Reference 'A' Circuit Malfunction |
Video