C120C GMC Code - Brake Pedal Position Sensor 4 Not Plausible
Quick Answer
The C120C GMC code indicates that the Brake Pedal Position Sensor 4 is not providing plausible data to the vehicle's electronic control unit (ECU). Common causes include Faulty brake pedal position sensor 4, Wiring harness issues or electrical connections, Corrosion or damage to sensor components. 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
- C120C GMC indicates Brake Pedal Position Sensor 4 Not Plausible.
- Common causes
- Common causes include Faulty brake pedal position sensor 4, Wiring harness issues or electrical connections, Corrosion or damage to sensor components.
- 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 C120C GMC Description
The C120C GMC code indicates that the Brake Pedal Position Sensor 4 is not providing plausible data to the vehicle's electronic control unit (ECU). The brake pedal position sensor is a crucial component in modern vehicles, as it informs the ECU about the position of the brake pedal and the driver's braking intentions. When sensor 4 is not providing plausible data, it can lead to issues with the vehicle's braking system, affecting its performance and safety.
Common Causes of C120C GMC
- Faulty brake pedal position sensor 4
- Wiring harness issues or electrical connections
- Corrosion or damage to sensor components
- ECU communication errors or malfunctions
- Software glitches or programming issues
Symptoms of C120C GMC
- Illumination of the ABS warning light on the dashboard
- Inconsistent or delayed response from the brake pedal
- ABS system engaging unexpectedly or not engaging when needed
- Reduced braking power or increased stopping distances
- Traction control system malfunctions or stability issues
How to Fix C120C GMC
- Perform a diagnostic scan to confirm the C120C code and identify the specific cause of the issue.
- Inspect the brake pedal position sensor 4 and its wiring harness for any signs of damage, corrosion, or loose connections.
- Replace the faulty sensor if necessary, ensuring proper installation and calibration.
- Clear the code from the ECU memory and perform a road test to verify that the issue has been resolved.
- If the problem persists, further troubleshooting may be required to address underlying electrical or communication issues.
Cost to Fix C120C GMC
The typical repair costs for resolving the C120C GMC code related to the Brake Pedal Position Sensor 4 Not Plausible can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing a faulty sensor and addressing related wiring or electrical issues can range from $200 to $500, including parts and labor. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also impact the final repair costs. It's recommended to consult with a professional mechanic for a more accurate estimate based on your specific circumstances.
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