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AutoCodes - Generic - P1178

P1178 Code - Fuel Pump Driver Control Module Sensor 1 Internal Supply Circuit

- Code Popularity: 44,008 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1178?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Fuel Pump Power Control Module
  • Fuel Pump Power Control Module harness is open or shorted
  • Fuel Pump Power Control Module circuit poor electrical connection
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How to Fix the DTC P1178?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1178 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P1178 Description

The Fuel Pump Power Control Module is in constant communication with the Engine Control Module (ECM) regarding the operating state of the fuel pump power control system. Serial data messages are sent in a continuously repeating series of rolling counts with associated password protect samples. Each count/sample is assigned a value. When the ECM determines there is an error in the fuel pump control module fuel level sensor internal supply circuit, the ECM sets Diagnostic Trouble Code (DTC) P1178.

OBDII Code P1178 - Fuel Pump Driver Control Module Sensor 1 Internal Supply Circuit - AutoCodes.com
P1178 Code - Fuel Pump Driver Control Module Sensor 1 Internal Supply Circuit

Need More Information on the Code?

Need more information on how to fix the P1178 code? Get Access to Factory Service Manuals

Information for Specific Makes

  • P1178 Audi Linear Oxygen Sensor Pump Current Open Circuit
  • P1178 BMW O2 Sensor Signal Circuit Slow Switching From Rich to Lean Bank 1 Sensor 1
  • P1178 Buick Fuel Pump Driver Control Module Sensor 1 Internal Supply Circuit
  • P1178 Cadillac Fuel Pump Driver Control Module Sensor 1 Internal Supply Circuit
  • P1178 Chevrolet Fuel Pump Driver Control Module Sensor 1 Internal Supply Circuit
  • P1178 GMC Fuel Pump Driver Control Module Sensor 1 Internal Supply Circuit
  • P1178 Hyundai Electronic Throttle System Motor Battery Voltage Open
  • P1178 MINI O2 Sensor Signal Circuit Slow Switching From Rich to Lean Bank 1 Sensor 1
  • P1178 Volkswagen Linear Oxygen Sensor Pump Current Open Circuit

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Code P1178 comments

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