P1399 GMC Code - Wheel Speed Sensor 2 G-Sensor Circuit Intermittent
Quick Answer
The P1399 GMC code indicates a problem with the Wheel Speed Sensor 2 G-Sensor Circuit being intermittent. Common causes include Damaged or corroded wheel speed sensor wiring, Faulty wheel speed sensor, Poor electrical connection 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
- P1399 GMC indicates Wheel Speed Sensor 2 G-Sensor Circuit Intermittent.
- Common causes
- Common causes include Damaged or corroded wheel speed sensor wiring, Faulty wheel speed sensor, Poor electrical connection 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 P1399 GMC Description
The P1399 GMC code indicates a problem with the Wheel Speed Sensor 2 G-Sensor Circuit being intermittent. The wheel speed sensor is a crucial component of the vehicle's anti-lock braking system (ABS) and traction control system. It is responsible for monitoring the speed of each wheel and sending this information to the vehicle's electronic control unit (ECU). The G-Sensor, or lateral acceleration sensor, measures the car's lateral acceleration, helping to improve stability and handling.
Common Causes of P1399 GMC
- Damaged or corroded wheel speed sensor wiring
- Faulty wheel speed sensor
- Poor electrical connection in the sensor circuit
- G-Sensor malfunction
- ECU communication issue
Symptoms of P1399 GMC
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Erratic braking behavior, such as pulsating brakes
- Loss of stability during cornering
- Wheel speed sensor fault codes in the vehicle's computer system
How to Fix P1399 GMC
- Begin by conducting a visual inspection of the wheel speed sensor wiring and connectors. Look for any signs of damage, corrosion, or loose connections. Repair or replace any damaged components.
- Test the wheel speed sensor using a multimeter to check for continuity and proper resistance. Replace the sensor if it fails the test.
- Inspect the G-Sensor for any signs of damage or malfunction. Replace if necessary.
- Check the ECU for any communication issues related to the wheel speed sensor circuit. Reset the ECU or reprogram as needed.
- Clear the diagnostic trouble codes from the vehicle's computer system using a scan tool and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1399 GMC
The cost of repairing a Wheel Speed Sensor 2 G-Sensor Circuit Intermittent issue can vary depending on the extent of the problem and the specific components that need to be replaced. On average, the parts for this repair can range from $100 to $300, while the labor costs can range from $150 to $300. Overall, the total repair cost may fall between $250 and $600. It is important to note that these are rough estimates, and actual costs may vary based on the factors mentioned earlier. It is advisable to consult with a professional mechanic for a more accurate cost estimate.
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