P1393 GMC Code - Wheel Speed Sensor 1 G-Sensor Circuit High Voltage
Quick Answer
The P1393 code for GMC vehicles indicates an issue with the Wheel Speed Sensor 1 G-Sensor Circuit High Voltage. Common causes include Faulty wheel speed sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting the sensor's functionality. 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
- P1393 GMC indicates Wheel Speed Sensor 1 G-Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty wheel speed sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting the sensor's functionality.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1393 GMC Description
The P1393 code for GMC vehicles indicates an issue with the Wheel Speed Sensor 1 G-Sensor Circuit High Voltage. This code specifically relates to the wheel speed sensor located on the first wheel, which measures the speed of that particular wheel and sends the data to the vehicle's computer system. The G-Sensor, also known as the lateral accelerometer, is responsible for detecting lateral forces acting on the vehicle, such as during cornering or sudden maneuvers.
Common Causes of P1393 GMC
- Faulty wheel speed sensor.
- Damaged wiring or connectors in the sensor circuit.
- Corrosion or debris affecting the sensor's functionality.
- Malfunctioning G-Sensor circuit.
- Electronic control unit (ECU) issues affecting sensor readings.
Symptoms of P1393 GMC
- ABS warning light illuminated on the dashboard.
- Traction control system (TCS) warning light activated.
- Loss of traction or stability control during driving.
- Erratic braking behavior, such as locking up or pulsating brakes.
- Decreased fuel efficiency due to compromised system performance.
How to Fix P1393 GMC
- Begin by conducting a diagnostic scan to confirm the P1393 code and identify the specific wheel speed sensor and G-Sensor circuit involved.
- Inspect the wheel speed sensor for any visible damage or corrosion, and test its functionality using a multimeter.
- Check the wiring and connectors associated with the sensor for any breaks, fraying, or loose connections, and repair or replace as needed.
- Test the G-Sensor circuit for proper voltage and continuity, addressing any issues found during testing.
- Clear the diagnostic trouble codes (DTCs) from the vehicle's computer system and perform a road test to ensure the issue has been resolved.
Cost to Fix P1393 GMC
The typical repair costs for addressing the P1393 code related to the Wheel Speed Sensor 1 G-Sensor Circuit High Voltage can range from $150 to $400, including parts and labor. However, it is important to note that actual costs may vary based on the specific vehicle make and model, the extent of the issue, and the rates charged by auto repair shops. Additionally, diagnosis time and labor rates can vary between different locations and types of repair facilities. It is recommended to consult with a qualified mechanic or dealership to obtain a more accurate estimate based on the individual circumstances.
Need more information about the P1393 GMC code?
Need more information on how to fix the P1393 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1393 GMC code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1393 GMC Code
No Frequently Asked Questions about P1393 GMC Code found.
Discuss the causes and fixes for P1393 GMC OBDII Code
Code P1393 GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.