When a Chevrolet vehicle starts to present symptoms of engine malfunction, it is important to first diagnose the cause of the problem. One common issue that can arise is the Chevrolet Code P1125, which stands for Accelerator Pedal Position System Malfunction. This code is triggered when the Powertrain Control Module (PCM) detects an unexpected voltage condition on the Accelerator Pedal Position (APP) sensor circuit, with more than one fault in memory. Common causes of this code include a contaminated APP sensor connector, or when the TAC module detects a fault in the system. To better understand and address the issue, it is important to understand the causes and solutions associated with the Chevrolet Code P1125.
Causes and Solutions of Chevrolet Code P1125
| Cause | Solution |
|---|---|
| APP sensor connector contaminated with oil or moisture | Clean the connector and replace with a new one |
| TAC module detecting a fault in the system | Replace the TAC Module |
| Refer to service bulletins 14636 and PIP5094 | Follow the instructions provided in the bulletins |
| Signal ‘tracking’ between circuits | Replace the APP sensor and clean the circuit |
Contaminated APP Sensor Connector
The Chevrolet Code P1125 can be caused by a contaminated APP sensor connector. Over time, the sensor connector can become contaminated with oil or moisture, which can cause the TAC module to detect a fault in the system. In this case, the solution is to clean the connector and replace it with a new one.
TAC Module Fault
The Chevrolet Code P1125 can also be caused by a fault in the TAC module. In this case, the solution is to replace the TAC Module. It is important to note that this process should only be done by a trained professional, as the TAC module is a delicate component.
Service Bulletins 14636 and PIP5094
Another potential cause of the Chevrolet Code P1125 is a signal ‘tracking’ between circuits. If this is the case, the solution is to replace the APP sensor and clean the circuit. In some cases, it may also be necessary to refer to service bulletins 14636 and PIP5094 for more detailed instructions.
Conclusion
The Chevrolet Code P1125 is a common issue that can arise in some Chevrolet vehicles. It is important to understand the causes and solutions associated with this code in order to effectively diagnose and address the issue. Common causes of this code include a contaminated APP sensor connector, a fault in the TAC module, and a signal ‘tracking’ between circuits. Solutions to these causes include cleaning the connector and replacing it with a new one, replacing the TAC module, and replacing the APP sensor and cleaning the circuit. To ensure the best outcome, it is important to follow the instructions provided in service bulletins 14636 and PIP5094 for the Chevrolet Code P1125.
https://www.youtube.com/watch?v=vfVJvG80Ock