P1125 GMC Code - Accelerator Pedal Position Sensor Fault
Quick Answer
The accelerator pedal position (APP) sensor 1 and the APP sensor 2 are potentiometer type sensors, each with the following circuits: • A 5-volt reference circuit • A low reference circuit • A signal circuit The control module provides the APP sensors with a 5-volt reference circuit and a low reference circuit. Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1125 GMC indicates Accelerator Pedal Position Sensor Fault.
- Common causes
- Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1125 GMC Description
• A 5-volt reference circuit
• A low reference circuit
• A signal circuit
The control module provides the APP sensors with a 5-volt reference circuit and a low reference circuit. The APP sensors then provide the control module signal voltages proportional to pedal movement. The APP sensor 1 signal voltage is low at rest and increases as the pedal is depressed.
The APP sensor 2 signal voltage is low at rest and increases as the pedal is depressed. When the control module detects that the APP sensor 1 and the APP sensor 2 signal circuits are out of correlation with each other, DTC P1125 sets.
What are the Possible Causes of the DTC P1125 GMC?
- Faulty Accelerator Pedal Position Sensor
- Accelerator Pedal Position Sensor harness is open or shorted
- Accelerator Pedal Position Sensor circuit poor electrical connection
How to Fix the DTC P1125 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1125 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1125 GMC Code
1. What are the common symptoms of OBDII code P1125 GMC (Accelerator Pedal Position Sensor Fault)?
- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the illumination of the Check Engine light.
2. What are the possible causes of OBDII code P1125 GMC?
- The code P1125 GMC is typically caused by a faulty accelerator pedal position sensor, wiring issues, or a problem with the throttle body.
3. How can I diagnose the OBDII code P1125 GMC?
- Diagnosis usually involves using a scan tool to read the code, checking the wiring and connections related to the accelerator pedal position sensor, and testing the sensor's functionality.
4. Can I continue driving my vehicle with OBDII code P1125 GMC?
- It is not recommended to drive your vehicle with this code present, as it can lead to unsafe driving conditions and potential further damage to the engine.
5. What are some repair tips for addressing OBDII code P1125 GMC?
- Repair tips include inspecting and cleaning the throttle body, checking and repairing any damaged wiring, and replacing the accelerator pedal position sensor if necessary.
6. How much does it cost to repair OBDII code P1125 GMC?
- The cost of repairing this code can vary depending on the underlying issue, but it may range from $100 to $300 for parts and labor.
7. Can I reset the OBDII code P1125 GMC myself?
- You can reset the code using an OBDII scan tool, but it is important to address the underlying issue causing the fault code to prevent it from coming back.
8. How urgent is it to address OBDII code P1125 GMC?
- It is important to address this code promptly to prevent further engine damage and ensure safe driving conditions.
9. Are there any recalls related to OBDII code P1125 GMC?
- It is advisable to check with your local GMC dealership or the National Highway Traffic Safety Administration (NHTSA) for any recalls related to this code.
10. Can a DIY enthusiast repair OBDII code P1125 GMC?
- Depending on your skill level and access to tools, a DIY enthusiast may be able to address this code by following repair guides and instructions, but professional help is recommended if unsure.
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