P1288 GMC Code - Accelerator Pedal Position Sensor 3 Circuit High Voltage
Quick Answer
The P1288 diagnostic trouble code for GMC vehicles indicates an issue with the Accelerator Pedal Position Sensor 3 Circuit registering high voltage. Common causes include Faulty Accelerator Pedal Position Sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor electrical connections in the sensor circuit. 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
- P1288 GMC indicates Accelerator Pedal Position Sensor 3 Circuit High Voltage.
- Common causes
- Common causes include Faulty Accelerator Pedal Position Sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor electrical connections in the sensor circuit.
- 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 P1288 GMC Description
The P1288 diagnostic trouble code for GMC vehicles indicates an issue with the Accelerator Pedal Position Sensor 3 Circuit registering high voltage. The Accelerator Pedal Position Sensor (APPS) is a crucial component that monitors the position of the accelerator pedal and sends this information to the engine control module (ECM) to adjust fuel delivery and engine performance accordingly. In this case, the high voltage reading suggests a problem in the circuit that may be causing inaccurate or erratic readings from the sensor.
Common Causes of P1288 GMC
- Faulty Accelerator Pedal Position Sensor.
- Damaged wiring or connectors in the sensor circuit.
- Corrosion or poor electrical connections in the sensor circuit.
- Issues with the electronic control module (ECM).
- Environmental factors such as moisture or debris affecting sensor operation.
Symptoms of P1288 GMC
- Hesitation or lack of response when pressing the accelerator pedal.
- Rough idling or uneven engine performance.
- Reduced engine power or poor acceleration.
- Illumination of the Check Engine Light on the dashboard.
- Stalling or difficulty maintaining a constant speed.
How to Fix P1288 GMC
- Begin by performing a thorough visual inspection of the Accelerator Pedal Position Sensor and its wiring harness for any signs of damage or corrosion.
- Use a multimeter to test the sensor's voltage output and compare it to the manufacturer's specifications to determine if it is within the acceptable range.
- If the sensor is found to be faulty, replace it with a new OEM or high-quality aftermarket part.
- Check and repair any damaged wiring or connectors in the sensor circuit to ensure proper electrical connections.
- Clear the diagnostic trouble code from the ECM using a scan tool and perform a test drive to verify that the issue has been resolved.
Cost to Fix P1288 GMC
The typical repair costs for addressing the P1288 code related to the Accelerator Pedal Position Sensor 3 Circuit High Voltage can range from $150 to $400, including parts and labor. However, it is important to note that the specific diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to consult with local auto repair shops to obtain a more accurate estimate based on the specific circumstances.
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