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Engine-Codes – GMC – P1179 GMC

P1179 GMC Code - Fuel Pump Driver Control Module Sensor 2 Internal Supply Circuit

Quick Answer

The P1179 GMC code refers to a fault in the Fuel Pump Driver Control Module Sensor 2 Internal Supply Circuit. Common causes include Faulty fuel pump driver control module sensor, Wiring or connector issues in the internal supply circuit, Corrosion or damage to the sensor. 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
P1179 GMC indicates Fuel Pump Driver Control Module Sensor 2 Internal Supply Circuit.
Common causes
Common causes include Faulty fuel pump driver control module sensor, Wiring or connector issues in the internal supply circuit, Corrosion or damage to the sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1179 GMC Description

The P1179 GMC code refers to a fault in the Fuel Pump Driver Control Module Sensor 2 Internal Supply Circuit. The fuel pump driver control module is responsible for controlling the fuel pump operation in vehicles. This sensor is crucial for monitoring the internal supply circuit of the fuel pump driver control module, ensuring that it is functioning correctly. When this sensor detects a problem within the circuit, the P1179 code is triggered.

OBDII Code P1179 GMC - Fuel Pump Driver Control Module Sensor 2 Internal Supply Circuit
P1179 GMC Code - Fuel Pump Driver Control Module Sensor 2 Internal Supply Circuit

Common Causes of P1179 GMC

  1. Faulty fuel pump driver control module sensor
  2. Wiring or connector issues in the internal supply circuit
  3. Corrosion or damage to the sensor
  4. Electrical system malfunctions
  5. Poor quality fuel

Symptoms of P1179 GMC

  1. Engine misfires
  2. Poor fuel efficiency
  3. Difficulty starting the vehicle
  4. Engine stalling
  5. Illumination of the check engine light

How to Fix P1179 GMC

  1. Diagnose the issue by using a scan tool to retrieve the fault code and inspecting the fuel pump driver control module sensor.
  2. Check the wiring and connectors for any signs of damage or corrosion.
  3. Replace the faulty sensor if necessary.
  4. Clear the fault code from the vehicle's memory and test drive to ensure the issue has been resolved.
  5. Perform a final inspection to confirm that the repair has been successful and the check engine light is no longer illuminated.

Cost to Fix P1179 GMC

The typical repair costs for addressing a P1179 GMC code related to the fuel pump driver control module sensor 2 internal supply circuit can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $150 to $400. Overall, the total repair cost can amount to $250 to $700.

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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 P1179 GMC Code

1. What does the OBDII code P1179 mean for a GMC vehicle?

P1179 indicates an issue with the Fuel Pump Driver Control Module Sensor 2 Internal Supply Circuit, which may impact the fuel pump's operation and vehicle performance.

2. What are common symptoms of code P1179 in a GMC?

Symptoms may include difficulty starting the vehicle, reduced engine performance, stalling, or a check engine light.

3. What causes the P1179 code to appear?

Common causes include a faulty fuel pump driver control module, wiring issues, or poor electrical connections in the module's circuit.

4. Can I drive my GMC with the P1179 code?

Driving with this code is not recommended as it can lead to stalling or unreliable fuel delivery, potentially leaving you stranded.

5. How is the P1179 code diagnosed in a GMC?

Diagnosis typically involves checking the fuel pump driver control module, inspecting wiring and connectors, and testing for proper voltage and resistance in the circuit.

6. What repairs are needed to fix the P1179 code?

Repairs may include replacing the fuel pump driver control module, repairing damaged wiring, or cleaning and tightening electrical connections.

7. How much does it cost to fix the P1179 code on a GMC?

Repair costs vary but could range from $200 to $600 or more, depending on whether the module needs replacement and labor costs.

8. Can a bad fuel pump cause the P1179 code?

Yes, a failing fuel pump could indirectly trigger this code if it affects the fuel pump driver control module's operation.

9. Will clearing the P1179 code fix the problem?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be addressed to prevent the code from returning.

10. How can I prevent the P1179 code from appearing again?

To prevent recurrence, regularly inspect and maintain the fuel pump driver control module, wiring, and electrical connections in the fuel system.

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