AutoCodes – GMC – P0232 GMC

P0232 GMC Code - Fuel Pump Control Circuit High Voltage

Quick Answer

The Engine Control Module (ECM) supplies voltage to the fuel pump driver control module when the ECM detects that the ignition is on. Common causes include Faulty Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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: P0232 GMC indicates Fuel Pump Control Circuit High Voltage.
Common causes: Common causes include Faulty Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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 6,979

How popular is this code, among other codes? Low

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 Jun 02, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0232 GMC Description

The Engine Control Module (ECM) supplies voltage to the fuel pump driver control module when the ECM detects that the ignition is on. The voltage from the ECM to the fuel pump driver control module remains active for 2 s, unless the engine is in crank or run. While this voltage is being received, the fuel pump driver control module supplies a varying voltage to the fuel tank fuel pump module in order to maintain the desired fuel line pressure. The fuel pump driver control module monitors the fuel pump voltage to determine if the fuel pump is functioning as commanded. The Diagnostic Trouble Code (DTC) will be set if the fuel pump driver control module detects that the fuel pump output circuit voltage is greater than 4.0 V for 1 s when the voltage should be 0 V.

OBDII Code P0232 GMC - Fuel Pump Control Circuit High Voltage - AutoCodes.com — P0232 GMC Code - Fuel Pump Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0232 GMC?

Faulty Fuel Pump
Fuel Pump harness is open or shorted
Fuel Pump circuit poor electrical connection
Faulty Fuel Pump Driver Control Module

How to Fix the DTC P0232 GMC?

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 P0232 GMC 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 P0232 GMC code?

Need more information on how to fix the P0232 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0232 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P0232 2014 GMC Sierra — Fuel Pump Control Circuit High Voltage
P0232 2015 GMC Sierra — Fuel Pump Control Circuit High Voltage
P0232 2016 GMC Sierra — Fuel Pump Control Circuit High Voltage
P0232 2017 GMC Sierra — Fuel Pump Control Circuit High Voltage
P0232 2018 GMC Sierra — Fuel Pump Control Circuit High Voltage

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 P0232 GMC Code

1. What are the common symptoms of OBDII code P0232 in a GMC vehicle?

The common symptoms of OBDII code P0232 in a GMC vehicle include engine stalling, hesitation during acceleration, poor fuel economy, and difficulty starting the engine.

2. What are the possible causes of OBDII code P0232 in a GMC vehicle?

Possible causes of OBDII code P0232 in a GMC vehicle include a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, a blown fuel pump fuse, or a problem with the fuel pump relay.

3. How can I diagnose OBDII code P0232 in my GMC vehicle?

Diagnosing OBDII code P0232 in a GMC vehicle involves using a scan tool to check for the code, inspecting the fuel pump wiring and connectors for damage, testing the fuel pump relay, and checking the fuel pump fuse for continuity.

4. Can I still drive my GMC vehicle with OBDII code P0232?

It is not recommended to drive your GMC vehicle with OBDII code P0232, as it can lead to engine stalling and other performance issues. It is best to address the underlying cause of the code as soon as possible.

5. How can I repair OBDII code P0232 in my GMC vehicle?

To repair OBDII code P0232 in a GMC vehicle, you may need to replace the fuel pump, repair or replace damaged wiring or connectors in the fuel pump circuit, replace a blown fuel pump fuse, or troubleshoot and replace a faulty fuel pump relay.

6. Is it safe to reset the OBDII code P0232 in my GMC vehicle using a scan tool?

While you can reset the OBDII code P0232 using a scan tool, it is important to address the underlying issue causing the code to prevent further damage to your GMC vehicle's fuel system.

7. What should I do if OBDII code P0232 in my GMC vehicle keeps coming back after resetting?

If OBDII code P0232 keeps coming back after resetting, it indicates a persistent issue with the fuel pump control circuit. You should perform a thorough inspection and repair of the fuel pump system to resolve the problem.

8. Can a DIY enthusiast repair OBDII code P0232 in a GMC vehicle?

Depending on your automotive repair skills and knowledge, a DIY enthusiast may be able to repair OBDII code P0232 in a GMC vehicle by following diagnostic procedures and replacing faulty components like the fuel pump, wiring, fuse, or relay.

9. How much does it typically cost to repair OBDII code P0232 in a GMC vehicle at a professional auto repair shop?

The cost of repairing OBDII code P0232 in a GMC vehicle at a professional auto repair shop can vary depending on the extent of the issue, the cost of parts needed for repair, and labor rates. It is recommended to get a quote from a trusted auto repair shop.

10. Are there any preventive maintenance tips to avoid OBDII code P0232 in a GMC vehicle?

To prevent OBDII code P0232 in a GMC vehicle, it is advisable to regularly inspect the fuel pump system for any signs of wear or damage, maintain clean fuel filters, and follow the manufacturer's recommended maintenance schedule for your vehicle.