P129D 2017 Chevrolet Silverado Code - Fuel Pump Driver Control Module Ignition On/Start Switch Circuit Low Voltage
Quick Answer
The P129D diagnostic trouble code (DTC) specifically pertains to the Fuel Pump Driver Control Module Ignition On/Start Switch Circuit Low Voltage in a 2017 Chevrolet Silverado. Common causes include Faulty fuel pump driver control module, Damaged wiring or connectors in the circuit, Issues with the ignition switch. 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
- P129D 2017 Chevrolet Silverado indicates Fuel Pump Driver Control Module Ignition On/Start Switch Circuit Low Voltage.
- Common causes
- Common causes include Faulty fuel pump driver control module, Damaged wiring or connectors in the circuit, Issues with the ignition switch.
- 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 P129D 2017 Chevrolet Silverado Description
The P129D diagnostic trouble code (DTC) specifically pertains to the Fuel Pump Driver Control Module Ignition On/Start Switch Circuit Low Voltage in a 2017 Chevrolet Silverado. This code indicates that there is a malfunction in the circuit that controls the fuel pump driver module, resulting in low voltage levels. The fuel pump driver control module is responsible for regulating the fuel pump's operation, ensuring the correct amount of fuel is delivered to the engine for optimal performance. When this circuit is compromised, it can lead to various performance issues and potentially affect the vehicle's drivability.
Common Causes of P129D 2017 Chevrolet Silverado
- Faulty fuel pump driver control module
- Damaged wiring or connectors in the circuit
- Issues with the ignition switch
- Corrosion or poor connections in the circuit
- Electrical system malfunctions
Symptoms of P129D 2017 Chevrolet Silverado
- Engine hesitation or misfires
- Stalling or rough idling
- Difficulty starting the vehicle
- Reduced fuel efficiency
- Illumination of the check engine light
How to Fix P129D 2017 Chevrolet Silverado
- Diagnose the root cause of the low voltage in the circuit using a diagnostic scanner and multimeter.
- Inspect the wiring, connectors, and components related to the fuel pump driver control module for damage or corrosion.
- Test the fuel pump driver control module and ignition switch for functionality and replace if necessary.
- Repair or replace any damaged wiring or connectors in the circuit.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P129D 2017 Chevrolet Silverado
The typical repair costs for addressing a P129D code in a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. Generally, parts such as a new fuel pump driver control module, wiring, or connectors can range from $100 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair bill potentially amounting to a few hundred dollars to over a thousand dollars. It's advisable to consult with a local auto repair shop for a more accurate estimate based on the specific diagnosis and repair needed for your vehicle.
Tech Notes for P129D 2017 Chevrolet Silverado
2016-2018 Chevrolet Silverado 1500
2019 Chevrolet Silverado LD
Dead Battery / P1682 P129D P10E4 P2535 / Crank No Start
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Frequently Asked Questions about P129D 2017 Chevrolet Silverado Code
1. What does OBDII code P129D mean on a 2017 Chevrolet Silverado?
P129D indicates a low voltage issue in the Fuel Pump Driver Control Module (FPCM) ignition on/start switch circuit.
2. What are the symptoms of code P129D on a Chevy Silverado?
Common symptoms include difficulty starting the engine, reduced fuel efficiency, engine stalling, or the engine failing to start altogether.
3. What causes the P129D code to appear on a 2017 Silverado?
Potential causes include a faulty Fuel Pump Driver Control Module, damaged wiring or connectors in the FPCM circuit, a weak battery, or a malfunctioning ignition switch.
4. Can a bad fuel pump trigger the P129D code?
While a failing fuel pump itself may not directly trigger P129D, related issues like a malfunctioning FPCM or wiring problems can disrupt fuel delivery and cause this code.
5. How do you diagnose a P129D code on a 2017 Silverado?
Diagnosis involves checking the battery voltage, inspecting the FPCM wiring and connectors for damage, testing the ignition switch, and verifying the FPCM's functionality with a multimeter or scan tool.
6. Can a loose connection cause the P129D code?
Yes, a loose or corroded connection in the FPCM circuit can result in low voltage and trigger the P129D code.
7. How do you fix the P129D code on a 2017 Silverado?
Repairs may include replacing the Fuel Pump Driver Control Module, repairing damaged wiring or connectors, cleaning corroded terminals, or addressing any issues with the ignition switch.
8. Is it safe to drive with a P129D code?
Driving with a P129D code is not recommended, as it may lead to engine stalling or starting issues, potentially leaving you stranded.
9. How much does it cost to repair a P129D code on a Chevy Silverado?
Repair costs vary but can range from $100 to $500, depending on whether the issue is related to wiring, the FPCM, or the ignition switch.
10. Can clearing the P129D code resolve the issue?
Clearing the code without addressing the underlying problem may temporarily turn off the check engine light, but the issue will likely return. Proper diagnosis and repair are necessary.
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