AutoCodes – Pontiac – C1254 Pontiac

C1254 Pontiac Code - Abnormal Shutdown Detected

Quick Answer

The microprocessor contains a data storage area, keep alive memory, which can save pertinent data when the ignition is turned OFF. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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: C1254 Pontiac indicates Abnormal Shutdown Detected.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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 6,222

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 Aug 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1254 Pontiac Description

The microprocessor contains a data storage area, keep alive memory, which can save pertinent data when the ignition is turned OFF. The Keep Alive Memory (KAM) data is lost if the battery power or module ground is removed from the module. The KAM area is an integral part of the microprocessor and cannot be serviced separately.

OBDII Code C1254 Pontiac - Abnormal Shutdown Detected - AutoCodes.com — C1254 Pontiac Code - Abnormal Shutdown Detected

What does this mean?

What are the Possible Causes of the DTC C1254 Pontiac?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module (EBCM) harness is open or shorted
Electronic Brake Control Module (EBCM) circuit poor electrical connection

How to Fix the DTC C1254 Pontiac?

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 C1254 Pontiac 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.

Frequently Asked Questions about C1254 Pontiac Code

1. What does the OBDII code C1254 mean on a Pontiac?

C1254 indicates an "Abnormal Shutdown Detected," typically related to the electronic brake control module (EBCM) losing power or being improperly shut down.

2. What are the common symptoms of the C1254 code on a Pontiac?

Symptoms may include the ABS or traction control warning light being illuminated, loss of ABS functionality, and potential errors in traction or stability control systems.

3. What causes the C1254 code to appear on a Pontiac?

Common causes include a weak or failing battery, loose or corroded electrical connections, issues with the ignition system, or a malfunction in the EBCM.

4. Can a low battery voltage trigger the C1254 code on a Pontiac?

Yes, low battery voltage or a sudden power drop can cause the EBCM to shut down abnormally, triggering the C1254 code.

5. How can I fix the C1254 code on my Pontiac?

Start by checking the battery and alternator for proper voltage, inspect all related fuses and wiring for damage or corrosion, and ensure the EBCM has a stable power source.

6. Is it safe to drive with the C1254 code active on a Pontiac?

While the vehicle may still be drivable, safety features like ABS and traction control may be compromised, so itâ€™s advised to address the issue promptly.

7. Can resetting the code clear the C1254 fault on a Pontiac?

Clearing the code with a scan tool may work temporarily, but the issue will return if the underlying problem, such as power loss or wiring issues, isnâ€™t resolved.

8. How much does it cost to repair a C1254 code on a Pontiac?

Repair costs can vary depending on the root cause. Battery replacement may cost $100-$200, while EBCM repairs or replacements could range from $500-$1,500.

9. Can a faulty ignition switch cause the C1254 code on a Pontiac?

Yes, a faulty ignition switch can disrupt power to the EBCM, leading to an abnormal shutdown and triggering the C1254 code.

10. Do I need professional help to fix the C1254 code on my Pontiac?

While some issues, like checking the battery or fuses, can be handled by DIYers, diagnosing and repairing EBCM or wiring issues may require professional assistance.