AutoCodes – Chevrolet – P1255 2018 Chevrolet Silverado

P1255 2018 Chevrolet Silverado 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 Chevrolet Silverado 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.

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Code Popularity 440

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 17, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1255 2018 Chevrolet Silverado 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.

OBDII Code P1255 2018 Chevrolet Silverado - Fuel Pump Control Module Driver High Temperature - AutoCodes.com — P1255 2018 Chevrolet Silverado Code - Fuel Pump Control Module Driver High Temperature

What does this mean?

What are the Possible Causes of the DTC P1255 2018 Chevrolet Silverado?

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 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 P1255 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 P1255 2018 Chevrolet Silverado code?

Need more information on how to fix the P1255 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1255 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado Code

1. What does the OBDII code P1255 mean on a 2018 Chevrolet Silverado?

The P1255 code indicates that the Fuel Pump Control Module has detected a high temperature condition in the fuel pump driver circuit.

2. What are the common symptoms of the P1255 code on a 2018 Chevy Silverado?

Symptoms may include engine stalling, difficulty starting, reduced engine performance, or an illuminated check engine light.

3. What causes the P1255 code on a 2018 Chevrolet Silverado?

Common causes include an overheating fuel pump, electrical issues in the fuel pump circuit, a failing Fuel Pump Control Module, or poor ventilation around the module.

4. Can I drive my 2018 Chevrolet Silverado with the P1255 code?

It's not recommended to drive with this code, as it may lead to fuel delivery issues, stalling, or further damage to the fuel pump system.

5. How can I diagnose the P1255 code on my 2018 Chevy Silverado?

Diagnose the code by checking the fuel pump wiring, inspecting the Fuel Pump Control Module for damage or overheating, and ensuring proper ventilation around the module.

6. How do I repair the P1255 code on a 2018 Chevrolet Silverado?

Repairs may involve replacing the Fuel Pump Control Module, addressing wiring or connector issues, or ensuring proper cooling around the module.

7. Is the P1255 code specific to Chevrolet Silverado trucks?

No, the P1255 code can appear on other vehicles with similar fuel pump control systems, but the diagnosis and repair steps may vary.

8. How much does it cost to fix the P1255 code on a 2018 Chevy Silverado?

Repair costs can range from $150 to $600 or more, depending on whether the issue is related to wiring, the Fuel Pump Control Module, or the fuel pump itself.

9. Can a dirty fuel filter cause the P1255 code on a 2018 Silverado?

While a dirty fuel filter can cause fuel delivery problems, it is unlikely to trigger the P1255 code, which is specifically related to the Fuel Pump Control Module overheating.

10. Does the P1255 code require module reprogramming after replacement?

In some cases, the replacement Fuel Pump Control Module may require reprogramming to properly communicate with the vehicle's computer system. Check your service manual or consult a professional technician.