AutoCodes – Chevrolet – C12B6 Chevrolet

C12B6 Chevrolet Code - ABS High Pressure Accumulator Pressure Sensor Circuit Open Or Short To Ground

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
C12B6 Chevrolet indicates ABS High Pressure Accumulator Pressure Sensor Circuit Open Or Short To Ground.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,053
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 06, 2020
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Code C12B6 Chevrolet Description

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. The Electronic Brake Control Module (EBCM) uses input from the high pressure accumulator sensor for more accurate control during braking and vehicle stability enhancement system event.
OBDII Code C12B6 Chevrolet - ABS High Pressure Accumulator Pressure Sensor Circuit Open Or Short To Ground - AutoCodes.com
C12B6 Chevrolet Code - ABS High Pressure Accumulator Pressure Sensor Circuit Open Or Short To Ground

What are the Possible Causes of the DTC C12B6 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 C12B6 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C12B6 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.

Need more information about the C12B6 Chevrolet code?

Need more information on how to fix the C12B6 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C12B6 Chevrolet code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C12B6 Chevrolet Code

1. What are common symptoms of OBDII code C12B6 in a Chevrolet related to the ABS High Pressure Accumulator Pressure Sensor Circuit?

- Common symptoms include the ABS warning light illuminating on the dashboard, loss of ABS functionality, and possible issues with brake performance.

2. What can cause the ABS High Pressure Accumulator Pressure Sensor Circuit to be open or short to ground in a Chevrolet?

- Possible causes include damaged wiring or connectors, a faulty pressure sensor, issues with the ABS control module, or a problem with the ABS pump.

3. How can I diagnose the ABS High Pressure Accumulator Pressure Sensor Circuit issue in my Chevrolet?

- Diagnosis usually involves using a diagnostic scanner to retrieve the specific OBDII trouble code, checking the wiring and connectors for damage, and testing the pressure sensor's resistance.

4. Is it safe to drive my Chevrolet with OBDII code C12B6 related to the ABS High Pressure Accumulator Pressure Sensor Circuit?

- It is not recommended to drive the vehicle with this issue as it can affect the ABS system's functionality and compromise braking performance in certain conditions.

5. Can I repair the ABS High Pressure Accumulator Pressure Sensor Circuit issue in my Chevrolet myself?

- DIY repair may be possible for those with automotive repair experience. However, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair.

6. What are the potential consequences of ignoring OBDII code C12B6 in a Chevrolet related to the ABS High Pressure Accumulator Pressure Sensor Circuit?

- Ignoring this code can lead to ABS system failure, compromised brake performance, and potential safety hazards during emergency braking situations.

7. How much does it typically cost to repair the ABS High Pressure Accumulator Pressure Sensor Circuit issue in a Chevrolet?

- Repair costs can vary depending on the specific cause of the issue, but it may involve replacing the pressure sensor, repairing damaged wiring, or addressing issues with the ABS control module, potentially ranging from $200 to $800 or more.

8. Are there any preventive maintenance tips to avoid encountering OBDII code C12B6 in a Chevrolet?

- Regularly inspecting the ABS system components, ensuring proper wiring connections, and addressing any ABS warning lights promptly can help prevent issues with the ABS High Pressure Accumulator Pressure Sensor Circuit.

9. Will resetting the OBDII code C12B6 related to the ABS High Pressure Accumulator Pressure Sensor Circuit make it go away permanently?

- Resetting the code may temporarily turn off the warning light, but if the underlying issue is not addressed, the code is likely to reappear once the ABS system detects the problem again.

10. Can a malfunction in the ABS High Pressure Accumulator Pressure Sensor Circuit impact other systems in a Chevrolet?

- While the primary impact is on the ABS system, a malfunction in this circuit can potentially affect the overall brake system performance and compromise vehicle safety.

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