P1255 2016 GMC Sierra Code - Fuel Pump Control Module Driver High Temperature
Quick Answer
The P1255 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Fuel Pump Control Module (FPCM) Driver High Temperature. Common causes include Malfunctioning Fuel Pump Control Module (FPCM), Poor electrical connections or wiring issues, Excessive heat exposure in the engine compartment. 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
- P1255 2016 GMC Sierra indicates Fuel Pump Control Module Driver High Temperature.
- Common causes
- Common causes include Malfunctioning Fuel Pump Control Module (FPCM), Poor electrical connections or wiring issues, Excessive heat exposure in the engine compartment.
- 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 P1255 2016 GMC Sierra Description
The P1255 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Fuel Pump Control Module (FPCM) Driver High Temperature. The FPCM is responsible for controlling the fuel pump's operation, ensuring the correct fuel pressure is maintained for the engine's performance. When the FPCM driver temperature is too high, it can lead to issues with the fuel pump's functionality, potentially causing drivability problems and affecting the vehicle's overall performance.
Common Causes of P1255 2016 GMC Sierra
- Malfunctioning Fuel Pump Control Module (FPCM).
- Poor electrical connections or wiring issues.
- Excessive heat exposure in the engine compartment.
- Faulty fuel pump relay.
- Defective fuel pump.
Symptoms of P1255 2016 GMC Sierra
- Engine stalling or hesitation during acceleration.
- Rough idling or misfiring.
- Decreased fuel efficiency.
- Illumination of the check engine light.
- Difficulty starting the engine.
How to Fix P1255 2016 GMC Sierra
- Begin by diagnosing the specific cause of the high temperature in the FPCM driver using a scan tool and conducting a visual inspection of the fuel pump system.
- Check the FPCM for signs of overheating or damage, and test the electrical connections for proper voltage and continuity.
- Replace the FPCM if it is found to be malfunctioning or damaged.
- Inspect and repair any faulty wiring or connections in the fuel pump system.
- Test the repaired system to ensure the high temperature issue is resolved and clear the DTC from the vehicle's computer.
Cost to Fix P1255 2016 GMC Sierra
The typical repair costs for addressing a P1255 code on a 2016 GMC Sierra can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Factors such as location, vehicle make and model, and engine type can also influence the overall repair costs. For a more accurate estimate, it's recommended to consult with a qualified mechanic or auto repair shop in your area.
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Frequently Asked Questions about P1255 2016 GMC Sierra Code
1. What does the OBDII code P1255 mean on a 2016 GMC Sierra?
P1255 indicates that the Fuel Pump Control Module (FPCM) has detected a high temperature condition in its driver circuit.
2. What are the common symptoms of code P1255 on a 2016 GMC Sierra?
Symptoms may include engine stalling, difficulty starting, reduced engine performance, or the check engine light illuminating.
3. What causes the P1255 code to appear on a GMC Sierra?
Common causes include an overheating fuel pump, excessive electrical resistance in the circuit, a faulty Fuel Pump Control Module, or poor ventilation around the module.
4. Can I drive my 2016 GMC Sierra with a P1255 code?
Driving with this code is not recommended, as it could lead to engine stalling or failure of the fuel system, potentially leaving you stranded.
5. How do you diagnose the P1255 code on a GMC Sierra?
Diagnosis typically involves using a scan tool to confirm the code, inspecting the Fuel Pump Control Module and wiring for damage, and checking for proper voltage and cooling.
6. What repairs are needed to fix the P1255 code on a 2016 GMC Sierra?
Repairs may include replacing the Fuel Pump Control Module, fixing damaged wiring or connectors, or addressing a failing fuel pump.
7. How much does it cost to repair the P1255 code on a GMC Sierra?
Repair costs vary but can range from $200 to $600, depending on whether the issue is with the module, wiring, or fuel pump.
8. Can a dirty fuel filter cause the P1255 code?
A clogged or dirty fuel filter is unlikely to cause this specific code, but it can lead to fuel pump stress, contributing to overheating.
9. How can I prevent the P1255 code from recurring on my GMC Sierra?
Regular maintenance, ensuring proper ventilation around the Fuel Pump Control Module, and addressing electrical issues promptly can help prevent this code.
10. Does the P1255 code require reprogramming the Fuel Pump Control Module?
In some cases, reprogramming or updating the module’s software may be necessary after replacement to ensure proper operation.
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