C1278 Pontiac Code - TCS Temporarily Inhibited By PCM
Quick Answer
The Powertrain Control Module (PCM) monitors various parameters. Common causes include Faulty Electronic Brake Control Module (EBCM), Faulty Powertrain Control Module (PCM). 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
- C1278 Pontiac indicates TCS Temporarily Inhibited By PCM.
- Common causes
- Common causes include Faulty Electronic Brake Control Module (EBCM), Faulty Powertrain Control Module (PCM).
- 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 C1278 Pontiac Description
What are the Possible Causes of the DTC C1278 Pontiac?
- Faulty Electronic Brake Control Module (EBCM)
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC C1278 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 C1278 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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Frequently Asked Questions about C1278 Pontiac Code
1. What does the OBDII code C1278 mean on a Pontiac?
C1278 indicates that the Traction Control System (TCS) has been temporarily inhibited by the Powertrain Control Module (PCM) due to a detected issue.
2. What are the common symptoms of code C1278 in a Pontiac?
Symptoms may include the TCS warning light illuminating, reduced traction control function, and occasional loss of stability assistance.
3. What causes the C1278 code to appear?
Common causes include faulty wheel speed sensors, communication issues between the PCM and TCS module, or problems with the brake system such as low brake fluid.
4. Can I still drive my Pontiac with code C1278?
Yes, you can usually drive the vehicle, but the traction control system may not function properly, which could affect handling in slippery conditions.
5. How do I diagnose the C1278 code on my Pontiac?
Start by scanning for additional codes, inspecting the wheel speed sensors, checking brake fluid levels, and verifying communication between the PCM and TCS module.
6. What should I check first when troubleshooting code C1278?
Begin by checking the wheel speed sensors for damage or debris, ensuring proper connections, and verifying that the brake fluid is at the correct level.
7. Can a failing PCM cause the C1278 code?
Yes, a failing or improperly functioning PCM can cause communication issues with the TCS module, leading to the C1278 code.
8. How can I clear the C1278 code after repairs?
Use an OBDII scanner to clear the code after addressing the issue. If the problem persists, the code may reappear.
9. Is code C1278 specific to Pontiacs?
No, while C1278 can appear on other GM vehicles, its specific meaning and symptoms may vary depending on the make and model.
10. How much does it cost to fix a C1278 code on a Pontiac?
Repair costs can vary depending on the root cause, ranging from $50 for a simple sensor cleaning to $500 or more for replacing a faulty PCM or module.
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