P1255 2018 GMC Sierra Code - Fuel Pump Control Module Driver High Temperature
Quick Answer
The Engine Control Module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. Common causes include Faulty Fuel Pump Control Module, Fuel Pump Control Module harness is open or shorted, Fuel Pump 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
- P1255 2018 GMC Sierra indicates Fuel Pump Control Module Driver High Temperature.
- Common causes
- Common causes include Faulty Fuel Pump Control Module, Fuel Pump Control Module harness is open or shorted, Fuel Pump 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 P1255 2018 GMC Sierra Description
What are the Possible Causes of the DTC P1255 2018 GMC Sierra?
- Faulty Fuel Pump Control Module
- Fuel Pump Control Module harness is open or shorted
- Fuel Pump Control Module circuit poor electrical connection
How to Fix the DTC P1255 2018 GMC Sierra?
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 P1255 2018 GMC Sierra 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 P1255 2018 GMC Sierra code?
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Frequently Asked Questions about P1255 2018 GMC Sierra Code
1. What does the OBDII code P1255 mean for a 2018 GMC Sierra?
P1255 indicates that the Fuel Pump Control Module (FPCM) has detected a high temperature condition in the fuel pump driver circuit.
2. What are the common symptoms of code P1255 in a 2018 GMC Sierra?
Symptoms may include difficulty starting the engine, reduced engine performance, stalling, or the check engine light turning on.
3. What causes the P1255 code to appear in a GMC Sierra?
Common causes include an overheated fuel pump, a malfunctioning Fuel Pump Control Module, poor electrical connections, or a failing fuel pump driver.
4. Can I continue driving my 2018 GMC Sierra with a P1255 code?
It is not recommended to continue driving, as this code can indicate potential fuel delivery issues, which may lead to engine damage or stalling.
5. How is P1255 diagnosed in a 2018 GMC Sierra?
A mechanic will use a scan tool to confirm the code, inspect the fuel pump driver circuit and FPCM for damage, and check for poor wiring or excessive heat buildup.
6. What are the possible repairs to resolve code P1255?
Repairs may include replacing the Fuel Pump Control Module, repairing faulty wiring or connections, or replacing the fuel pump if it is overheating.
7. Can a faulty fuel pump cause the P1255 code in a GMC Sierra?
Yes, a failing fuel pump that generates excessive heat can trigger the P1255 code.
8. How much does it cost to fix the P1255 code in a 2018 GMC Sierra?
Repair costs vary but may range from $200 to $800, depending on whether the issue is with the fuel pump, FPCM, or wiring.
9. How can I prevent the P1255 code from occurring again?
Regular maintenance, including inspecting fuel system components and ensuring proper cooling, can help prevent this issue.
10. Is the P1255 code a common issue in the 2018 GMC Sierra?
While not extremely common, it can occur if the fuel pump or control module experiences excessive heat or electrical issues.
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