C012E Cadillac Code - Hydraulic Brake Boost Pressure Loss
Quick Answer
The boost pressure valve is internal to the brake pressure modulator. 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
- C012E Cadillac indicates Hydraulic Brake Boost Pressure Loss.
- 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 C012E Cadillac Description
When a boost fault condition is detected, the boost control will continue applying as much pressure as possible until boost pressure is no longer available.
What are the Possible Causes of the DTC C012E 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 C012E 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.
Code Tech Notes
DTC C012E 12 Hydraulic Brake Boost Pressure Loss Low Input
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C012E 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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Frequently Asked Questions about C012E Cadillac Code
1. What does the OBDII code C012E mean on a Cadillac?
C012E indicates a Hydraulic Brake Boost Pressure Loss, meaning the system has detected insufficient pressure in the hydraulic brake assist system.
2. What are the common symptoms of code C012E in a Cadillac?
Common symptoms include a hard brake pedal, reduced braking performance, ABS or brake warning lights on the dashboard, and potential difficulty stopping the vehicle.
3. What causes the C012E code to appear on a Cadillac?
Possible causes include a failing hydraulic brake booster, a damaged brake pressure sensor, low hydraulic fluid levels, or issues with the power steering system that powers the brake booster.
4. Is it safe to drive a Cadillac with the C012E code?
No, it is not safe to drive with this code as it can significantly reduce braking performance and increase the risk of an accident.
5. How is the C012E code diagnosed on a Cadillac?
A mechanic will use a scan tool to confirm the code, inspect the hydraulic brake booster system, check the brake fluid levels, and test the brake pressure sensor and associated circuits.
6. Can low hydraulic fluid cause the C012E code in a Cadillac?
Yes, low hydraulic fluid can cause a loss of pressure in the brake assist system, triggering the C012E code.
7. What repairs can fix the C012E code on a Cadillac?
Repairs may include replacing the hydraulic brake booster, repairing or replacing the brake pressure sensor, fixing leaks in the system, or refilling hydraulic fluid.
8. How much does it cost to repair a C012E code on a Cadillac?
Repair costs can vary widely depending on the issue, but replacing a hydraulic brake booster can cost $500–$1,500, while smaller fixes like sensor replacements or fluid refills may cost less.
9. Can a faulty ABS module cause the C012E code in a Cadillac?
While less common, a malfunctioning ABS module could potentially cause communication issues or misreadings that lead to the C012E code.
10. How can I prevent the C012E code from appearing in the future?
Regularly check and maintain proper hydraulic fluid levels, inspect the brake system for leaks, and address any power steering issues promptly to prevent hydraulic brake boost failures.
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