C0046 GMC Code - Left Rear Wheel Speed Sensor Circuit Range Performance
Quick Answer
The Wheel Speed Sensor (WSS) receives ignition voltage from the Electronic Brake Control Module (EBCM) and provides a DC square wave signal back to the module. Common causes include Faulty Left Rear Wheel Speed Sensor, Left Rear Wheel Speed Sensor harness is open or shorted, Left Rear Wheel Speed Sensor circuit poor electrical connection. 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
- C0046 GMC indicates Left Rear Wheel Speed Sensor Circuit Range Performance.
- Common causes
- Common causes include Faulty Left Rear Wheel Speed Sensor, Left Rear Wheel Speed Sensor harness is open or shorted, Left Rear Wheel Speed Sensor circuit poor electrical connection.
- 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.
Code C0046 GMC Description
What are the Possible Causes of the DTC C0046 GMC?
- Faulty Left Rear Wheel Speed Sensor
- Left Rear Wheel Speed Sensor harness is open or shorted
- Left Rear Wheel Speed Sensor circuit poor electrical connection
How to Fix the DTC C0046 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C0046 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about C0046 GMC Code
1. What are the common symptoms of OBDII code C0046 GMC (Left Rear Wheel Speed Sensor Circuit Range Performance)?
The common symptoms include the ABS light illuminating on the dashboard, traction control system not functioning properly, and potential loss of stability control.
2. What are the possible causes of OBDII code C0046 GMC?
Possible causes include a faulty left rear wheel speed sensor, damaged wiring or connectors in the circuit, a defective ABS module, or issues with the wheel bearing.
3. How can I diagnose the issue related to OBDII code C0046 GMC?
You can diagnose the issue by using a diagnostic scanner to read the code, inspecting the left rear wheel speed sensor and its wiring for damage, and checking the connections to ensure they are secure.
4. Can I still drive my vehicle with OBDII code C0046 GMC present?
It is not recommended to drive the vehicle with this code present, as it can affect the safety features like ABS and traction control systems.
5. How can I repair OBDII code C0046 GMC?
Repairing this code involves replacing the left rear wheel speed sensor if faulty, repairing any damaged wiring or connectors, and resetting the code with a diagnostic scanner.
6. Will resetting the OBDII code C0046 GMC make the issue go away permanently?
Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear.
7. How much does it typically cost to repair OBDII code C0046 GMC?
The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.
8. Can OBDII code C0046 GMC be triggered by other unrelated issues in the vehicle?
While it is possible for other issues to trigger this code indirectly, the most common cause is related to the left rear wheel speed sensor circuit.
9. Is it possible to prevent OBDII code C0046 GMC from occurring in the future?
Regular maintenance and inspections of the ABS system, wheel speed sensors, and related components can help prevent this code from occurring.
10. How urgent is it to address OBDII code C0046 GMC once it appears?
It is important to address this code promptly to ensure the proper functioning of safety systems like ABS and traction control, as driving with these systems affected can compromise vehicle safety.
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