AutoCodesBuick – P1255 Buick

P1255 Buick 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 Buick 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 667
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 17, 2022
💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1255 Buick Description

The Engine Control Module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from the ECM to the fuel pump control module remains for 2 seconds unless the engine is cranked or run. While this voltage is being received, the fuel pump control module supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel pressure. The Diagnostic Trouble Code (DTC) will be set if the fuel pump control module detects an over-temperature fault.
(Actual Fuel Pump Control Module looks may be different)
OBDII Code P1255 Buick - Fuel Pump Control Module Driver High Temperature - AutoCodes.com
P1255 Buick Code - Fuel Pump Control Module Driver High Temperature

What are the Possible Causes of the DTC P1255 Buick?

  • 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 Buick?

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 Buick 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 Buick code?

Need more information on how to fix the P1255 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1255 Buick code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1255 Buick Code

1. What does the OBDII code P1255 mean on a Buick?

P1255 indicates that the Fuel Pump Control Module has detected a high temperature in its driver circuit, which could impact fuel pump operation.

2. What are the common symptoms of code P1255 in a Buick?

Symptoms may include engine stalling, difficulty starting, reduced fuel efficiency, and an illuminated check engine light.

3. What causes the P1255 code to appear on a Buick?

Common causes include overheating of the fuel pump control module, electrical issues like short circuits, or a failing fuel pump.

4. Can I drive my Buick with code P1255?

Driving with a P1255 code is not recommended, as it could lead to engine stalling or further damage to the fuel system.

5. How do you diagnose the P1255 code on a Buick?

Diagnosis involves checking the fuel pump control module for overheating, inspecting wiring and connectors for damage, and testing the fuel pump's operation.

6. What tools are needed to fix a P1255 code?

You’ll need an OBDII scanner, a multimeter for testing electrical circuits, and possibly tools to access and replace the fuel pump control module.

7. How much does it cost to repair a P1255 code on a Buick?

Repair costs can range from $150 to $500, depending on whether the issue is with the control module, wiring, or fuel pump.

8. Can a faulty fuel pump cause the P1255 code?

Yes, a failing fuel pump can cause the control module to overheat, triggering the P1255 code.

9. How can I prevent the P1255 code from recurring?

Regularly inspect and maintain the fuel system, replace any damaged wiring, and ensure proper cooling of the control module.

10. Does resetting the code clear the P1255 issue?

Resetting the code may turn off the check engine light temporarily, but the underlying issue must be fixed to prevent the code from returning.

Discuss the causes and fixes for P1255 Buick OBDII Code

Code P1255 Buick comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play