AutoCodes – Cadillac – P1255 Cadillac

P1255 Cadillac 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 Cadillac 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 1,320
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 17, 2022
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Code P1255 Cadillac 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 Cadillac - Fuel Pump Control Module Driver High Temperature - AutoCodes.com
P1255 Cadillac Code - Fuel Pump Control Module Driver High Temperature

What are the Possible Causes of the DTC P1255 Cadillac?

  • 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 Cadillac?

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 Cadillac 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 Cadillac code?

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Need Help with the Code?

Get the P1255 Cadillac 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 Cadillac Code

1. What are the common symptoms of OBDII code P1255 in a Cadillac related to the Fuel Pump Control Module Driver High Temperature?

The common symptoms include engine stalling, rough idling, decreased fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P1255 in a Cadillac indicating an issue with the Fuel Pump Control Module Driver High Temperature?

Possible causes include a faulty fuel pump control module, wiring issues, high ambient temperatures, or a malfunctioning fuel pump.

3. How can I diagnose OBDII code P1255 in my Cadillac related to the Fuel Pump Control Module Driver High Temperature?

Diagnosis involves using an OBDII scanner to retrieve the specific code, inspecting the fuel pump control module and wiring for any visible damage, and conducting temperature tests to identify overheating issues.

4. What are some repair tips for addressing OBDII code P1255 in a Cadillac associated with the Fuel Pump Control Module Driver High Temperature?

Repair tips include replacing the faulty fuel pump control module, repairing any damaged wiring, ensuring proper cooling for the module, and addressing any underlying fuel pump issues.

5. Can driving with OBDII code P1255 related to the Fuel Pump Control Module Driver High Temperature cause further damage to my Cadillac?

Continuing to drive with this code can potentially lead to fuel pump failure, engine performance issues, and further damage to the vehicle's components, so it's recommended to address the problem promptly.

6. Is it safe to reset the check engine light after experiencing OBDII code P1255 in a Cadillac due to the Fuel Pump Control Module Driver High Temperature?

While resetting the check engine light may temporarily turn it off, it's crucial to diagnose and repair the underlying issue causing the code to prevent potential long-term damage to the vehicle.

7. How much does it typically cost to repair OBDII code P1255 in a Cadillac related to the Fuel Pump Control Module Driver High Temperature?

Costs can vary depending on the specific repair needed, but replacing a fuel pump control module can range from $200 to $600, including parts and labor.

8. What steps can I take to prevent OBDII code P1255 in my Cadillac indicating an issue with the Fuel Pump Control Module Driver High Temperature?

To prevent this code, ensure regular maintenance of the fuel pump system, keep the cooling system in good condition, and address any warning signs promptly to avoid overheating issues.

9. Can a DIY enthusiast repair OBDII code P1255 related to the Fuel Pump Control Module Driver High Temperature in a Cadillac?

While some aspects of the repair, such as checking wiring connections, can be done by a DIY enthusiast, replacing the fuel pump control module may require specialized tools and expertise, so it's best to consult a professional mechanic.

10. How long does it take to repair OBDII code P1255 in a Cadillac due to the Fuel Pump Control Module Driver High Temperature?

The repair time can vary depending on the exact cause of the issue and the extent of the repair needed, but it typically takes a few hours to a full day to diagnose and fix the problem.

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