Engine-Codes - Generic - P1178

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

- Code Popularity: 44,014 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?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1178 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P1178 Code Mean?

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.

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

Need more Information on the Code?

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Code P1178 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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