P1390 Buick Code - Wheel Speed Sensor 1 G-Sensor Circuit
Quick Answer
The P1390 code for Buick indicates a problem with the Wheel Speed Sensor 1 G-Sensor Circuit. Common causes include Faulty wheel speed sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting the sensor's performance. 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
- P1390 Buick indicates Wheel Speed Sensor 1 G-Sensor Circuit.
- Common causes
- Common causes include Faulty wheel speed sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting the sensor's performance.
- 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 P1390 Buick Description
The P1390 code for Buick indicates a problem with the Wheel Speed Sensor 1 G-Sensor Circuit. This means that there is a malfunction in the circuit that is responsible for monitoring the speed of one of the wheels on the vehicle. The Wheel Speed Sensor is an important component of the vehicle's anti-lock braking system (ABS) and traction control system. This sensor measures the speed of each wheel and sends this information to the vehicle's electronic control module (ECM) to help regulate braking and traction on slippery surfaces.
Common Causes of P1390 Buick
- Faulty wheel speed sensor
- Damaged wiring or connectors in the sensor circuit
- Corrosion or debris affecting the sensor's performance
- Issues with the ECM or related control modules
- Physical damage to the sensor from road debris or impacts
Symptoms of P1390 Buick
- ABS light illuminated on the dashboard
- Traction control light is on
- Loss of traction control in slippery conditions
- Braking performance feels inconsistent or less responsive
- Unusual noises coming from the wheels during braking
How to Fix P1390 Buick
- Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific fault code and confirm that the issue is related to the Wheel Speed Sensor 1 G-Sensor Circuit.
- Inspect the wheel speed sensor for any visible damage or signs of wear. Replace the sensor if necessary.
- Check the wiring and connectors in the sensor circuit for any damage, corrosion, or loose connections. Repair or replace any faulty components.
- Clear the fault code from the vehicle's ECM using the diagnostic scanner and test drive the vehicle to ensure that the issue has been resolved.
- If the problem persists, further diagnostic testing may be necessary to identify any underlying issues with the ABS or traction control systems.
Cost to Fix P1390 Buick
The typical repair costs for addressing the P1390 code related to the Wheel Speed Sensor 1 G-Sensor Circuit can range from $150 to $400, including parts and labor. However, it is important to note that the actual cost can vary depending on the specific cause of the issue, the make and model of the vehicle, and labor rates at auto repair shops. Additional diagnostic time may also be required to pinpoint the exact source of the problem. It is recommended to consult with a qualified mechanic or shop for a more accurate estimate based on the individual circumstances.
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