P129C 2017 Chevrolet Silverado Code - Fuel Pump Driver Control Module System Voltage High
Quick Answer
The P129C diagnostic trouble code (DTC) specifically refers to a fault in the Fuel Pump Driver Control Module System Voltage being too high in a 2017 Chevrolet Silverado. Common causes include Faulty fuel pump driver control module, Electrical issues such as a short circuit or wiring damage, Overcharging of the vehicle's electrical system. 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
- P129C 2017 Chevrolet Silverado indicates Fuel Pump Driver Control Module System Voltage High.
- Common causes
- Common causes include Faulty fuel pump driver control module, Electrical issues such as a short circuit or wiring damage, Overcharging of the vehicle's electrical system.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P129C 2017 Chevrolet Silverado Description
The P129C diagnostic trouble code (DTC) specifically refers to a fault in the Fuel Pump Driver Control Module System Voltage being too high in a 2017 Chevrolet Silverado. In simpler terms, this code indicates that the voltage levels in the system controlling the fuel pump driver are exceeding the acceptable range set by the vehicle's onboard computer. This can lead to a variety of issues with the fuel system, potentially affecting the vehicle's performance and overall reliability.
Common Causes of P129C 2017 Chevrolet Silverado
- Faulty fuel pump driver control module
- Electrical issues such as a short circuit or wiring damage
- Overcharging of the vehicle's electrical system
- Issues with the vehicle's power supply or voltage regulator
- Malfunctioning fuel pump or related components
Symptoms of P129C 2017 Chevrolet Silverado
- Reduced fuel efficiency
- Rough idling or engine misfires
- Difficulty starting the engine
- Engine stalling while driving
- Check engine light illuminated on the dashboard
How to Fix P129C 2017 Chevrolet Silverado
- Begin by performing a thorough inspection of the fuel pump driver control module and associated wiring to check for any visible damage or signs of wear.
- Test the voltage levels in the system using a multimeter to determine if the system voltage is indeed too high and identify the source of the issue.
- Replace the fuel pump driver control module if it is found to be faulty, ensuring the new module is compatible with the vehicle's make and model.
- Repair any damaged wiring or address any electrical issues that may be causing the high system voltage.
- Test the vehicle to ensure that the issue has been resolved and that the fuel pump is operating within the correct parameters.
Cost to Fix P129C 2017 Chevrolet Silverado
The cost of repairing a P129C code in a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the parts for this repair can range from $100 to $300, while the labor costs can range from $150 to $400. Therefore, the total repair cost for addressing a Fuel Pump Driver Control Module System Voltage High code can be estimated to be between $250 and $700. It's important to note that these are approximate costs, and actual prices may vary based on factors such as location, labor rates, and the need for additional repairs or parts. It's advisable to consult with a qualified mechanic or auto repair shop to receive a more accurate cost estimate tailored to your specific situation.
Need more information about the P129C 2017 Chevrolet Silverado code?
Need more information on how to fix the P129C 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P129C 2017 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P129C 2017 Chevrolet Silverado Code
1. What does the OBDII code P129C mean on a 2017 Chevrolet Silverado?
P129C indicates that the Fuel Pump Driver Control Module (FPCM) has detected a system voltage higher than the expected range.
2. What are the symptoms of code P129C in a 2017 Chevrolet Silverado?
Symptoms may include difficulty starting, reduced engine performance, stalling, or an illuminated check engine light.
3. What causes the P129C code to appear in a 2017 Chevrolet Silverado?
Common causes include a faulty Fuel Pump Driver Control Module, wiring issues (like damaged or corroded connectors), or a malfunctioning alternator causing excessive voltage.
4. Can a bad battery trigger the P129C code?
Yes, a failing battery or loose battery connections can cause voltage irregularities that trigger this code.
5. How is the P129C code diagnosed?
A mechanic typically inspects the FPCM, checks the wiring and connectors for damage, and tests the electrical system for excessive voltage output.
6. Can I drive my 2017 Chevrolet Silverado with the P129C code?
Driving with this code is not recommended, as it can lead to further electrical issues or damage to the fuel system.
7. How do you fix the P129C code on a 2017 Chevrolet Silverado?
Fixes may involve replacing the FPCM, repairing damaged wiring or connectors, or addressing issues with the alternator or battery.
8. How much does it cost to repair the P129C code?
Repair costs can vary but typically range from $200 to $600, depending on whether the FPCM, wiring, or another component needs replacement.
9. Can a faulty alternator cause the P129C code?
Yes, a malfunctioning alternator that produces excessive voltage can contribute to triggering this code.
10. Is the P129C code covered under warranty for a 2017 Chevrolet Silverado?
It depends on the warranty type and coverage. If your vehicle is under a powertrain or emissions warranty, the repair may be covered. Check with your dealer.
Discuss the causes and fixes for P129C 2017 Chevrolet Silverado OBDII Code
Code P129C 2017 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.