P129E Buick Code - Fuel Pump Driver Control Module Signal Message Counter Incorrect
Quick Answer
The Fuel Pump Power Control Module is constantly sending serial data messages to the Engine Control Module (ECM) regarding the operating state of the fuel pump power control system. Common causes include Faulty Fuel Pump Power Control Module, Fuel Pump Power Control Module harness is open or shorted, Fuel Pump Power Control Module 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
- P129E Buick indicates Fuel Pump Driver Control Module Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Fuel Pump Power Control Module, Fuel Pump Power Control Module harness is open or shorted, Fuel Pump Power Control Module 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 P129E Buick Description
What are the Possible Causes of the DTC P129E Buick?
- Faulty Fuel Pump Power Control Module
- Fuel Pump Power Control Module harness is open or shorted
- Fuel Pump Power Control Module circuit poor electrical connection
How to Fix the DTC P129E Buick?
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 P129E Buick 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 P129E Buick Code
What does the OBDII code P129E mean on a Buick?
1. P129E indicates that the Fuel Pump Driver Control Module (FPCM) has detected an issue with the signal message counter, suggesting possible communication or electrical faults. 2.
What are the common symptoms of a P129E code on a Buick?
Symptoms may include engine stalling, difficulty starting, reduced engine performance, or an illuminated check engine light. 3.
What causes the P129E code to appear on a Buick?
Common causes include a faulty Fuel Pump Driver Control Module, damaged wiring or connectors, or issues with the communication network between the FPCM and the engine control module (ECM). 4.
Can a P129E code cause drivability issues?
Yes, it can lead to drivability problems such as poor acceleration, stalling, or the engine failing to start. 5.
How is the P129E code diagnosed in a Buick?
A technician will use a scan tool to check for related codes, inspect the wiring and connectors, and test the Fuel Pump Driver Control Module for proper operation. 6.
Can I still drive my Buick with a P129E code?
It's not recommended to drive with this code active, as it may lead to more severe issues, including engine stalling or failure to start. 7.
How do you fix the P129E code on a Buick?
Repairs may include replacing the Fuel Pump Driver Control Module, repairing wiring or connectors, or reprogramming the module if necessary. 8.
How much does it cost to repair a P129E code on a Buick?
Repair costs can vary but typically range from $200 to $600, depending on whether the module needs replacement or if wiring repairs are required. 9.
Can a weak battery cause a P129E code on a Buick?
Yes, a weak or failing battery can cause communication issues, potentially triggering this code. Always check battery health during diagnosis. 10.
Is the P129E code specific to Buick vehicles?
While P129E is more commonly associated with Buick models, it can also appear on other General Motors (GM) vehicles using similar systems.
Discuss the causes and fixes for P129E Buick OBDII Code
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