The automobile fault code P1178 indicates a problem with the Fuel Pump Power Control Module. The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light. The cause of this fault code can be a faulty Fuel Pump Power Control Module, an open or shorted harness, or a poor electrical connection in the module circuit.

To fix this issue, you should visually inspect the wiring harness and connectors for any damage. Look for broken, bent, pushed out, or corroded pins in the connectors.

The repair time for this issue is estimated to be around 1.0.

To interpret the fault code, you can check the “Possible Causes” listed above.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1178 fault code.

  • The symptoms of the automobile fault code p1178 include the Engine Light being ON and the Service Engine Soon Warning Light being illuminated.

The automobile fault code p1178 can be caused by a faulty Fuel Pump Power Control Module, an open or shorted harness, or a poor electrical connection in the circuit.

  • The fault code P1178 can be caused by: a faulty Fuel Pump Power Control Module, an open or shorted harness of the Fuel Pump Power Control Module, and a poor electrical connection in the circuit of the Fuel Pump Power Control Module.

To fix fault code p1178, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p1178, start by checking the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors related to the issue.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.
  • This fix is estimated to take approximately 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p1178 are the estimated repair time of 1.0 hour and the typical hourly rate charged by auto repair shops, which ranges between $75 and $150.

The P1178 fault code indicates an error in the fuel pump control module’s fuel level sensor internal supply circuit. This circuit is responsible for providing power to the sensor that measures the fuel level in the vehicle. The Fuel Pump Power Control Module constantly communicates with the Engine Control Module (ECM) to monitor the fuel pump power control system’s operation.

It sends serial data messages in a rolling count series with password-protected samples. When the ECM detects a problem with the fuel pump control module’s internal supply circuit for the fuel level sensor, it triggers the P1178 fault code.

This code helps identify and diagnose issues related to the fuel pump driver control module sensor 1 internal supply circuit.

What are the possible causes of the automobile fault code P1178?

If you see the engine light or service engine soon warning light on, the fault code P1178 could be the culprit. This code is often caused by a faulty fuel pump power control module or issues with the module’s harness, such as an open or short circuit or poor electrical connection. To fix the problem, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Also, look out for broken, bent, pushed out, or corroded pins on the connectors.

How can I visually inspect the wiring harness and connectors to fix the issue?

To fix the issue of the Engine Light being ON or the Service Engine Soon Warning Light, start by checking the possible causes mentioned above. Then, visually inspect the wiring harness and connectors related to the Fuel Pump Power Control Module. Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors. This thorough inspection will help identify any issues with the wiring and connectors and allow for appropriate fixes to be made.

What should I look for when checking for damaged components or corroded connector pins?

When troubleshooting an engine light or service engine soon warning light, it’s important to check for damaged components and corroded connector pins. These issues can be the cause of a faulty fuel pump power control module or poor electrical connection. To fix the problem, visually inspect the wiring harness and connectors, paying close attention to any signs of damage or corrosion. Look for broken, bent, pushed out, or corroded connector pins.

p1178 error fault code explained

If your engine light is on, it could be due to a faulty Fuel Pump Power Control Module or issues with the wiring harness and connectors. To fix it, visually inspect the wiring and connectors for any damage or corrosion. Look out for broken or bent pins.

Check the “Possible Causes” listed above for more details.

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