C012B Chevrolet Code - High Pressure Accumulator Pressure Sensor
Quick Answer
The high pressure accumulator is attached to the brake pressure modulator and provides up to 18, 000 kPa (2, 600 psi) for use when applying the brakes. Common causes include Faulty Brake Pressure Modulator, Brake Pressure Modulator harness is open or shorted, Brake Pressure Modulator 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
- C012B Chevrolet indicates High Pressure Accumulator Pressure Sensor.
- Common causes
- Common causes include Faulty Brake Pressure Modulator, Brake Pressure Modulator harness is open or shorted, Brake Pressure Modulator 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 C012B Chevrolet Description
What are the Possible Causes of the DTC C012B Chevrolet?
- Faulty Brake Pressure Modulator
- Brake Pressure Modulator harness is open or shorted
- Brake Pressure Modulator circuit poor electrical connection
How to Fix the DTC C012B Chevrolet?
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.
Code Tech Notes
DTC C012B 06 High Pressure Accumulator Pressure Sensor Low Voltage/Open
DTC C012B 0F High Pressure Accumulator Pressure Sensor Signal Erratic
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C012B Chevrolet 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 C012B Chevrolet Code
1. What does the OBDII code C012B mean on a Chevrolet?
The C012B code indicates an issue with the High Pressure Accumulator Pressure Sensor, which monitors the hydraulic pressure in the brake system.
2. What are the common symptoms of a C012B code in a Chevrolet?
Symptoms may include the ABS or brake warning light illuminating, reduced braking performance, or the ABS system not functioning properly.
3. What can cause the C012B code to appear in a Chevrolet?
Common causes include a faulty pressure sensor, damaged wiring or connectors, hydraulic pressure issues, or a malfunctioning ABS module.
4. How do I diagnose a C012B code on my Chevrolet?
Diagnosis involves using a scan tool to confirm the code, visually inspecting wiring and connectors for damage, checking hydraulic fluid levels, and testing the pressure sensor for proper function.
5. Can I drive my Chevrolet with the C012B code active?
While the vehicle may still be drivable, it’s not recommended as the ABS system may be compromised, affecting braking performance and safety.
6. How is the C012B code fixed in a Chevrolet?
Repairs may include replacing the faulty pressure sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the ABS module or hydraulic system.
7. How much does it cost to repair the C012B code in a Chevrolet?
The repair cost varies but typically ranges from $150 to $600, depending on whether the sensor, wiring, or ABS module needs replacement.
8. Can a low brake fluid level trigger the C012B code?
Yes, low hydraulic brake fluid can cause pressure-related issues that may trigger the C012B code.
9. Does the C012B code require reprogramming the ABS module after repairs?
In some cases, reprogramming or recalibrating the ABS module may be necessary after replacing components to ensure proper system functionality.
10. Can a faulty ABS module cause the C012B code to appear?
Yes, a malfunctioning ABS module can lead to incorrect pressure sensor readings and trigger the C012B code.
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