AutoCodes – GMC – P0232 2016 GMC Sierra

P0232 2016 GMC Sierra 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 2016 GMC Sierra 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 265
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 02, 2022
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Code P0232 2016 GMC Sierra 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 2016 GMC Sierra - Fuel Pump Control Circuit High Voltage - AutoCodes.com
P0232 2016 GMC Sierra Code - Fuel Pump Control Circuit High Voltage

What are the Possible Causes of the DTC P0232 2016 GMC Sierra?

  • 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 2016 GMC Sierra?

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 2016 GMC Sierra 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 2016 GMC Sierra code?

Need more information on how to fix the P0232 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2016 GMC Sierra Code

1. What does the OBDII code P0232 mean on a 2016 GMC Sierra?

The P0232 code indicates that the fuel pump control circuit is experiencing high voltage, which could affect fuel delivery to the engine.

2. What are the common symptoms of code P0232 in a 2016 GMC Sierra?

Symptoms may include difficulty starting the engine, engine stalling, reduced fuel efficiency, or the Check Engine Light being illuminated.

3. What causes the P0232 code to appear on a 2016 GMC Sierra?

Possible causes include a faulty fuel pump relay, damaged wiring or connectors in the fuel pump circuit, a short to power, or a malfunctioning fuel pump control module.

4. Can I drive my 2016 GMC Sierra with a P0232 code?

Driving with a P0232 code is not recommended, as it may lead to stalling, loss of power, or potential damage to the fuel system components.

5. How do I diagnose the P0232 code on my 2016 GMC Sierra?

Diagnosis involves checking the fuel pump relay, inspecting wiring and connectors for damage, and testing the fuel pump control module for proper function.

6. How do I fix the P0232 code on a 2016 GMC Sierra?

Repairs may include replacing a faulty fuel pump relay, repairing or replacing damaged wiring or connectors, or replacing the fuel pump control module.

7. What tools are needed to troubleshoot the P0232 code?

Tools needed include an OBDII scanner, a multimeter to check voltage and continuity, and wiring diagrams specific to the fuel pump circuit.

8. How much does it cost to repair the P0232 code on a 2016 GMC Sierra?

Repair costs can vary depending on the issue, but replacing a fuel pump relay typically costs $50-$100, while a fuel pump control module replacement may range from $300-$600.

9. Can a dead battery cause the P0232 code on a 2016 GMC Sierra?

A dead battery is unlikely to cause this code, but electrical issues such as overvoltage or a short to power in the circuit could trigger it.

10. Is it necessary to reset the code after repairs on a 2016 GMC Sierra?

Yes, after completing repairs, use an OBDII scanner to clear the code and verify that it does not return during a test drive.

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