P1234 - Fuel Pump Driver Module Disabled Or Off Line

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

P1234 Possible Causes

  • Inertia fuel shutoff (IFS) switch needs to be reset
  • Faulty Fuel Pump Driver Module (FPDM)
  • Fuel Pump Driver Module (FPDM) harness is open or shorted
  • Fuel Pump Driver Module (FPDM) circuit poor electrical connection
  • Faulty Inertia Fuel Shutoff (IFS) switch
  • Faulty Powertrain Control Module (PCM)

How do I fix code P1234?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
Connect Your Car To The Future

Cost of diagnosing the P1234 code

Labor: 1.0

The cost of diagnosing the P1234 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1234 Description

The Powertrain Control Module (PCM) monitors the Fuel Pump Monitor (FPM) circuit from the Fuel Pump Driver Module (FPDM). With the key on, the FPDM continuously sends a duty cycle signal to the PCM through the FPM circuit. The test fails if the PCM stops receiving the duty cycle signal.
OBDII Code P1234 -  Fuel Pump Driver Module Disabled Or Off Line - AutoCodes.com

More Information

Need more information on how to fix the P1234 code?
Get Access to Factory Service Manuals

Information for specific makes

Need more help?

Get the P1234 code diagnosed by a professional: Find a repair shop in your area

Comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P1234 code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧