AutoCodes – Generic – P1233

P1233 Code - Fuel Pump Driver Module Disabled Or Off Line

Quick Answer

The Powertrain Control Module (PCM) monitors the Fuel Pump Monitor (FPM) circuit from the Fuel Pump Driver Module (FPDM). Common causes include 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. 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: P1233 indicates Fuel Pump Driver Module Disabled Or Off Line .
Common causes: Common causes include 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.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 59,397

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1233 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 P1233 - Fuel Pump Driver Module Disabled Or Off Line - AutoCodes.com — P1233 Code - Fuel Pump Driver Module Disabled Or Off Line

What does this mean?

What are the Possible Causes of the DTC P1233?

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 to Fix the DTC P1233?

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 P1233 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 P1233 code?

Need more information on how to fix the P1233 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1233 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1233 Buick — Fuel Injector 4 Control Circuit Shorted
P1233 Cadillac — Fuel Injector 4 Control Circuit Shorted
P1233 Chevrolet — Fuel Injector 4 Control Circuit Shorted
P1233 Ford — Fuel Pump Driver Module Disabled Or Off Line
P1233 GMC — Fuel Injector 4 Control Circuit Shorted
P1233 Infiniti — Electric Throttle Control Performance Bank 2
P1233 Lincoln — Fuel Pump Driver Module Disabled Or Off Line
P1233 Mazda — Fuel Pump Driver Module Disabled Or Off Line
P1233 Mercury — Fuel Pump Driver Module Disabled Or Off Line
P1233 Mitsubishi — Main Throttle Position Sensor Plausibility
P1233 Nissan — Electric Throttle Control Performance Bank 2

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 P1233 Code

1. What are the common symptoms of OBDII code P1233 (Fuel Pump Driver Module Disabled Or Off Line)?

- Common symptoms include engine stalling, no start condition, rough idle, and loss of power while driving.

2. What are the possible causes of OBDII code P1233?

- The code P1233 can be caused by a faulty fuel pump driver module, damaged wiring or connectors, or a malfunctioning fuel pump.

3. How can I diagnose the cause of OBDII code P1233?

- Diagnosing the code may involve checking the fuel pump driver module for power and ground, inspecting the wiring for damage, and verifying the fuel pump operation.

4. Can a bad fuel pump cause OBDII code P1233?

- Yes, a malfunctioning fuel pump can trigger code P1233 by causing the fuel pump driver module to disable or go offline.

5. What are some repair tips for fixing OBDII code P1233?

- Repair tips may include replacing the fuel pump driver module, repairing damaged wiring or connectors, and testing the fuel pump for proper operation.

6. Is it safe to drive with OBDII code P1233 present?

- It is not recommended to drive with code P1233 present, as it can lead to engine performance issues and potential stalling or no-start conditions.

7. Can disconnecting and reconnecting the battery reset OBDII code P1233?

- Disconnecting the battery may temporarily clear the code, but it is important to diagnose and repair the underlying issue to prevent the code from returning.

8. How much does it typically cost to repair OBDII code P1233?

- The cost of repairing code P1233 can vary depending on the cause of the issue, but it may range from $200 to $600, including parts and labor.

9. Can code P1233 be triggered by a simple electrical problem?

- Yes, code P1233 can be triggered by simple electrical issues such as a loose connection, corroded wiring, or a blown fuse affecting the fuel pump system.

10. Will OBDII code P1233 affect fuel efficiency?

- Yes, code P1233 can impact fuel efficiency due to potential fuel pump driver module issues affecting the fuel delivery system.