P1287 GMC Code - Accelerator Pedal Position Sensor 3 Circuit Low Voltage
Quick Answer
When a GMC vehicle triggers diagnostic trouble code P1287, it indicates an issue with the Accelerator Pedal Position Sensor 3 Circuit, specifically a low voltage condition. Common causes include Faulty Accelerator Pedal Position Sensor: The sensor itself may be malfunctioning, providing incorrect voltage readings to the ECM, Wiring issues: Damaged or corroded wiring connections between the sensor and the ECM can disrupt the voltage signal, ECM malfunction: A problem with the Engine Control Module could prevent it from properly interpreting the sensor data. 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
- P1287 GMC indicates Accelerator Pedal Position Sensor 3 Circuit Low Voltage.
- Common causes
- Common causes include Faulty Accelerator Pedal Position Sensor: The sensor itself may be malfunctioning, providing incorrect voltage readings to the ECM, Wiring issues: Damaged or corroded wiring connections between the sensor and the ECM can disrupt the voltage signal, ECM malfunction: A problem with the Engine Control Module could prevent it from properly interpreting the sensor data.
- 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.
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Code P1287 GMC Description
When a GMC vehicle triggers diagnostic trouble code P1287, it indicates an issue with the Accelerator Pedal Position Sensor 3 Circuit, specifically a low voltage condition. The Accelerator Pedal Position Sensor (APPS) is a vital component of the vehicle's electronic throttle control system, responsible for monitoring the position of the accelerator pedal and sending this information to the Engine Control Module (ECM). This data helps the ECM adjust the throttle opening to achieve the desired engine performance.
Common Causes of P1287 GMC
- Faulty Accelerator Pedal Position Sensor: The sensor itself may be malfunctioning, providing incorrect voltage readings to the ECM.
- Wiring issues: Damaged or corroded wiring connections between the sensor and the ECM can disrupt the voltage signal.
- ECM malfunction: A problem with the Engine Control Module could prevent it from properly interpreting the sensor data.
- Poor electrical connections: Loose or poor electrical connections in the sensor circuit can lead to voltage irregularities.
Symptoms of P1287 GMC
- Reduced engine power: The vehicle may experience a loss of power or acceleration due to the inaccurate signals from the accelerator pedal position sensor.
- Poor fuel efficiency: A faulty sensor can cause the engine to run inefficiently, resulting in decreased fuel economy.
- Check Engine Light: The illumination of the Check Engine Light is a common symptom associated with this code, indicating a problem that requires attention.
- Rough idling: The engine may idle roughly or inconsistently as a result of the sensor issue.
How to Fix P1287 GMC
- Diagnose the issue: Use a diagnostic scanner to read the trouble codes and perform further testing to confirm the Accelerator Pedal Position Sensor 3 Circuit low voltage condition.
- Inspect wiring and connections: Check the wiring harness for any damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the sensor: Verify the functionality of the Accelerator Pedal Position Sensor using a multimeter or scan tool. Replace the sensor if it fails the test.
- Clear trouble codes: After making the necessary repairs, clear the trouble codes from the ECM memory using a scan tool.
- Test drive: Take the vehicle for a test drive to ensure that the issue has been resolved and that the sensor is now providing accurate data to the ECM.
Cost to Fix P1287 GMC
The typical cost to repair a P1287 GMC code related to the Accelerator Pedal Position Sensor 3 Circuit low voltage condition can vary depending on the specific vehicle make and model, the location of the repair shop, and the labor rates. On average, the cost of parts for this repair can range from $50 to $200, while the labor charges can be anywhere from $100 to $300. Overall, the total cost of addressing this issue could fall within the range of $150 to $500. It is advisable to consult with local auto repair shops to obtain a more precise estimate based on your vehicle's specific requirements.
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