P129B 2018 Chevrolet Silverado Code - Fuel Pump Driver Control Module System Voltage Low
Quick Answer
The Fuel Pump Power Control Module monitors the battery positive voltage circuit to verify the voltage is within the normal operating range. Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver 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
- P129B 2018 Chevrolet Silverado indicates Fuel Pump Driver Control Module System Voltage Low.
- Common causes
- Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver 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 P129B 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC P129B 2018 Chevrolet Silverado?
- Faulty Fuel Pump Driver Control Module
- Fuel Pump Driver Control Module harness is open or shorted
- Fuel Pump Driver Control Module circuit poor electrical connection
How to Fix the DTC P129B 2018 Chevrolet Silverado?
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 P129B 2018 Chevrolet Silverado 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.
Need more information about the P129B 2018 Chevrolet Silverado code?
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Frequently Asked Questions about P129B 2018 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P129B in a 2018 Chevrolet Silverado?
- Common symptoms include poor engine performance, rough idling, stalling, and difficulty starting the vehicle.
2. What causes the OBDII code P129B "Fuel Pump Driver Control Module System Voltage Low" in a 2018 Chevrolet Silverado?
- The code is often triggered by issues with the fuel pump driver control module, such as wiring faults, a faulty module, or low voltage supply.
3. How can I diagnose the cause of OBDII code P129B in my 2018 Chevrolet Silverado?
- Diagnosing the issue typically involves checking the wiring connections to the fuel pump driver control module, testing the module itself for faults, and ensuring proper voltage supply.
4. Can a DIYer repair OBDII code P129B in a 2018 Chevrolet Silverado?
- While some basic checks like inspecting wiring connections can be done by a DIYer, diagnosing and repairing issues with the fuel pump driver control module may require professional help.
5. Is it safe to continue driving with OBDII code P129B present in a 2018 Chevrolet Silverado?
- It is not recommended to drive the vehicle with this code present, as it can lead to fuel pump issues and potentially cause further damage to the vehicle.
6. How much does it typically cost to repair OBDII code P129B in a 2018 Chevrolet Silverado?
- The cost of repair can vary depending on the exact cause of the issue, but it may range from a couple hundred to over a thousand dollars, including parts and labor.
7. Are there any preventative measures to avoid OBDII code P129B in a 2018 Chevrolet Silverado?
- Regularly checking the fuel pump driver control module, maintaining proper voltage supply, and addressing any wiring issues promptly can help prevent this code from appearing.
8. Can a failing battery or alternator cause OBDII code P129B in a 2018 Chevrolet Silverado?
- Yes, a failing battery or alternator can lead to low voltage supply, which may trigger the P129B code due to insufficient power reaching the fuel pump driver control module.
9. Will resetting the OBDII code P129B in a 2018 Chevrolet Silverado make it go away permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear once the problem persists.
10. Is it possible for other components besides the fuel pump driver control module to trigger OBDII code P129B in a 2018 Chevrolet Silverado?
- While the fuel pump driver control module is the primary culprit, issues with related components like the fuel pump itself or the powertrain control module can also contribute to triggering the P129B code.
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