P12A8 2014 GMC Sierra Code - Fuel Pump Control Status Signal Message Counter Incorrect
Quick Answer
Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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
- P12A8 2014 GMC Sierra indicates Fuel Pump Control Status Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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 P12A8 2014 GMC Sierra Description
What are the Possible Causes of the DTC P12A8 2014 GMC Sierra?
- Faulty Fuel Pump
- Fuel Pump harness is open or shorted
- Fuel Pump circuit poor electrical connection
How to Fix the DTC P12A8 2014 GMC Sierra?
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 P12A8 2014 GMC Sierra 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 P12A8 2014 GMC Sierra Code
1. What does OBDII code P12A8 mean for a 2014 GMC Sierra?
P12A8 indicates an issue with the fuel pump control module, specifically a problem with the fuel pump control status signal message counter being incorrect.
2. What are the symptoms of code P12A8 in a 2014 GMC Sierra?
Common symptoms include reduced engine performance, difficulty starting the vehicle, poor fuel efficiency, or the check engine light being illuminated.
3. What causes the P12A8 code to appear?
The code can be triggered by a faulty fuel pump control module, wiring issues, poor electrical connections, or software glitches in the module.
4. Can I drive my 2014 GMC Sierra with the P12A8 code active?
Driving with this code is not recommended, as it may lead to further engine performance issues or potential stalling.
5. How can I diagnose the P12A8 code on my GMC Sierra?
Use an OBDII scanner to confirm the code, inspect the wiring and connectors to the fuel pump control module, and test the module itself for faults.
6. How do I fix the P12A8 code on a 2014 GMC Sierra?
Repairs may include replacing or reprogramming the fuel pump control module, repairing damaged wiring, or cleaning corroded electrical connections.
7. Is the P12A8 code a common issue in the 2014 GMC Sierra?
This code is not extremely common but can occur in vehicles with aging fuel pump control modules or wiring issues.
8. How much does it cost to repair the P12A8 code on a GMC Sierra?
Repair costs vary but typically range from $150 to $600, depending on whether the fuel pump control module needs replacement or reprogramming.
9. Can a bad fuel pump cause the P12A8 code on a 2014 GMC Sierra?
While the code primarily relates to the control module and its communication, a failing fuel pump could indirectly contribute to the issue.
10. Will clearing the P12A8 code fix the problem permanently?
Clearing the code may temporarily turn off the warning light, but the issue will likely return unless the underlying cause is addressed.
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