P1397 GMC Code - Wheel Speed Sensor 2 G-Sensor Circuit Low Voltage
Quick Answer
The P1397 diagnostic trouble code (DTC) specifically refers to the Wheel Speed Sensor 2 G-Sensor Circuit Low Voltage in GMC vehicles. Common causes include Faulty wheel speed sensor 2, Damaged wiring or connectors in the G-sensor circuit, Malfunctioning ABS module. 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
- P1397 GMC indicates Wheel Speed Sensor 2 G-Sensor Circuit Low Voltage.
- Common causes
- Common causes include Faulty wheel speed sensor 2, Damaged wiring or connectors in the G-sensor circuit, Malfunctioning ABS module.
- 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 P1397 GMC Description
The P1397 diagnostic trouble code (DTC) specifically refers to the Wheel Speed Sensor 2 G-Sensor Circuit Low Voltage in GMC vehicles. This means that the vehicle's onboard computer has detected a low voltage signal from the wheel speed sensor 2, which is responsible for monitoring the rotational speed of a specific wheel. The wheel speed sensor is a crucial component of the anti-lock braking system (ABS) and traction control system, as it provides essential data for these systems to operate effectively.
Common Causes of P1397 GMC
- Faulty wheel speed sensor 2
- Damaged wiring or connectors in the G-sensor circuit
- Malfunctioning ABS module
- Electrical issues within the vehicle's system
- Corrosion or debris affecting the wheel speed sensor's performance
Symptoms of P1397 GMC
- Illumination of the ABS warning light on the dashboard
- Traction control system malfunction or warning light activation
- Erratic or inconsistent ABS system operation during braking
- Increased stopping distances or difficulty maintaining control during braking maneuvers
- Unusual noises or vibrations coming from the wheels while driving
How to Fix P1397 GMC
- Begin by conducting a thorough diagnostic scan to confirm the presence of the P1397 code and identify the specific wheel speed sensor 2 G-sensor circuit that is affected.
- Inspect the wheel speed sensor 2 and its wiring for any signs of damage, corrosion, or loose connections. Replace the sensor if necessary.
- Check the ABS module and related components for any faults or malfunctions that may be contributing to the low voltage signal. Repair or replace as needed.
- Clear the DTC and perform a road test to verify that the issue has been resolved and that the ABS and traction control systems are functioning properly.
- If the problem persists, seek assistance from a qualified mechanic or dealership to conduct further diagnostics and repairs that may require specialized equipment or expertise.
Cost to Fix P1397 GMC
The cost of repairing a Wheel Speed Sensor 2 G-Sensor Circuit Low Voltage issue in a GMC vehicle can vary depending on the specific cause of the problem and the extent of repairs needed. In general, the replacement of a wheel speed sensor typically ranges from $100 to $300, while labor costs can range from $80 to $150 per hour. Additional costs may apply if the ABS module or wiring harness needs to be replaced or repaired. Overall, the total repair cost for addressing a P1397 DTC can range from $200 to $500 or more, depending on the severity of the issue and the vehicle's make and model. It is advisable to consult with a trusted auto repair shop to obtain a more accurate estimate based on your vehicle's specific needs and location.
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