AutoCodes – Cadillac – C12B6 Cadillac

C12B6 Cadillac 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 Cadillac 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.

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Code Popularity 864

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code C12B6 Cadillac 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 Cadillac - ABS High Pressure Accumulator Pressure Sensor Circuit Open Or Short To Ground - AutoCodes.com — C12B6 Cadillac Code - ABS High Pressure Accumulator Pressure Sensor Circuit Open Or Short To Ground

What does this mean?

What are the Possible Causes of the DTC C12B6 Cadillac?

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 Cadillac?

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 Cadillac 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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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.