C1220 2015 Chevrolet Silverado Code - Brake Pressure Sensor Supply Voltage Circuit High
Quick Answer
The Electronic Brake Control Module uses inputs from the Electronic Brake Control Brake Pedal Position Sensor to determine when the brake is applied and how much force is used. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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
- C1220 2015 Chevrolet Silverado indicates Brake Pressure Sensor Supply Voltage Circuit High.
- Common causes
- Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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 C1220 2015 Chevrolet Silverado Description
Brake pressure sensor information is communicated from the Electronic Brake Control Module (EBCM) to the Hybrid Control Processor (HCP). This information is used to schedule regenerative braking and engine autostops.
The Diagnostic Trouble Code (DTC) will be set when the Engine Control Module (ECM) detects a corrupted data message from the Electronic Brake Control Module.
What are the Possible Causes of the DTC C1220 2015 Chevrolet Silverado?
- Faulty Electronic Brake Control Module (EBCM)
- Electronic Brake Control Module harness is open or shorted
- Electronic Brake Control Module circuit poor electrical connection
- Faulty Starter/Generator Control Module
How to Fix the DTC C1220 2015 Chevrolet Silverado?
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 C1220 2015 Chevrolet Silverado 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 C1220 2015 Chevrolet Silverado Code
1. What does the OBDII code C1220 mean on a 2015 Chevrolet Silverado?
Code C1220 indicates a "Brake Pressure Sensor Supply Voltage Circuit High," meaning the brake pressure sensor is detecting an abnormally high voltage in its circuit.
2. What are the symptoms of code C1220 on a 2015 Chevrolet Silverado?
Symptoms may include illuminated ABS or brake warning lights, reduced braking performance, or loss of features like traction control or stability control.
3. What causes code C1220 on a 2015 Chevrolet Silverado?
Common causes include a faulty brake pressure sensor, damaged wiring or connectors, a malfunctioning ABS module, or issues with the vehicle's power supply to the sensor.
4. Can I drive my 2015 Chevrolet Silverado with code C1220?
While the vehicle may still be drivable, it's not recommended due to potential braking performance issues and disabled safety systems like ABS and traction control.
5. How do I diagnose code C1220 on my 2015 Chevrolet Silverado?
Start by inspecting the brake pressure sensor and its wiring for damage. Use a multimeter to check voltage levels in the circuit and scan for additional codes that may point to related issues.
6. How do I fix code C1220 on a 2015 Chevrolet Silverado?
Repairs may involve replacing the brake pressure sensor, repairing damaged wiring, cleaning corroded connectors, or reprogramming the ABS module if necessary.
7. How much does it cost to fix code C1220 on a 2015 Chevrolet Silverado?
The cost varies depending on the repair, but replacing the brake pressure sensor typically ranges from $100 to $300, including parts and labor.
8. Can a bad battery cause code C1220 in a 2015 Chevrolet Silverado?
Yes, a weak or failing battery can cause voltage irregularities, potentially triggering this code. Ensure the battery and charging system are functioning properly.
9. Do I need to reprogram the ABS module when fixing code C1220?
Reprogramming the ABS module may be necessary if the issue stems from software-related problems or if the module itself is replaced.
10. Will clearing the code C1220 fix the problem on my 2015 Chevrolet Silverado?
Clearing the code will turn off the warning light temporarily, but it won’t fix the underlying issue. Proper diagnostics and repairs are required to resolve the problem.
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