P008E: Fuel Cooler Pump Control Circuit High

Definition

The OBD2 code P008E indicates that there is a high voltage signal detected in the fuel cooler pump control circuit, which may suggest a malfunction in the pump or its control system

Common causes

Faulty fuel cooler pump
Damaged wiring or connectors
Short circuit in the control circuit
Open circuit in the control circuit
Faulty fuel pump control module
Corroded connectors
Poor ground connection

Common misdiagnoses

Fuel pump failure
Fuel pressure regulator issues
Wiring or connector problems
Fuel filter blockage
Engine control module (ECM) faults
Fuel injector issues
Vacuum leaks
Faulty fuel cooler pump
Low fuel level or fuel quality issues
Other electrical system faults

Troubleshooting steps

1. Check the Vehicle's Service Manual

Always refer to the specific service manual for your vehicle to understand the wiring diagrams, specifications, and troubleshooting procedures related to the fuel cooler pump
2. Visual Inspection
3. Inspect the wiring and connectors associated with the fuel cooler pump. Look for any signs of damage, corrosion, or loose connections
4. Check the fuel cooler pump itself for any physical damage or leaks
5. Check the Fuel Cooler Pump
6. Test the fuel cooler pump for proper operation. You can do this by applying direct power to the pump to see if it runs
7. If the pump does not operate when powered directly, it may need to be replaced
8. Test the Control Circuit
9. Use a multimeter to check the voltage at the fuel cooler pump connector. Ensure that the voltage is within the manufacturer's specifications
10. Check for continuity in the wiring between the fuel cooler pump and the engine control module (ECM). Look for any breaks or shorts in the wiring
11. Inspect the Fuel Pump Relay and Fuses
12. Check the fuel pump relay and associated fuses to ensure they are functioning correctly. Replace any blown fuses and test the relay for proper operation
13. Check for Ground Issues
14. Ensure that the ground connection for the fuel cooler pump is secure and free of corrosion. A poor ground can cause high resistance in the circuit
15. Scan for Additional Codes
16. Use an OBD-II scanner to check for any other related trouble codes that may provide additional context for the issue
17. Check the ECM
18. If all other components are functioning correctly, the issue may lie with the engine control module (ECM). Check for software updates or reprogramming if necessary
19. Clear the Code and Test Drive
20. After performing repairs, clear the trouble code and take the vehicle for a test drive to see if the code returns
21. Consult a Professional
22. If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or technician who has experience with your specific vehicle make and model. By following these steps, you should be able to identify and resolve the issue related to the P008E code

Definition

Common causes

Common misdiagnoses

Troubleshooting steps

1. Check the Vehicle's Service Manual

2. Visual Inspection

3. Inspect the wiring and connectors associated with the fuel cooler pump. Look for any signs of damage, corrosion, or loose connections

4. Check the fuel cooler pump itself for any physical damage or leaks

5. Check the Fuel Cooler Pump

6. Test the fuel cooler pump for proper operation. You can do this by applying direct power to the pump to see if it runs

7. If the pump does not operate when powered directly, it may need to be replaced

8. Test the Control Circuit

9. Use a multimeter to check the voltage at the fuel cooler pump connector. Ensure that the voltage is within the manufacturer's specifications

10. Check for continuity in the wiring between the fuel cooler pump and the engine control module (ECM). Look for any breaks or shorts in the wiring

11. Inspect the Fuel Pump Relay and Fuses

12. Check the fuel pump relay and associated fuses to ensure they are functioning correctly. Replace any blown fuses and test the relay for proper operation

13. Check for Ground Issues

14. Ensure that the ground connection for the fuel cooler pump is secure and free of corrosion. A poor ground can cause high resistance in the circuit

15. Scan for Additional Codes

16. Use an OBD-II scanner to check for any other related trouble codes that may provide additional context for the issue

17. Check the ECM

18. If all other components are functioning correctly, the issue may lie with the engine control module (ECM). Check for software updates or reprogramming if necessary

19. Clear the Code and Test Drive

20. After performing repairs, clear the trouble code and take the vehicle for a test drive to see if the code returns

21. Consult a Professional

22. If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or technician who has experience with your specific vehicle make and model. By following these steps, you should be able to identify and resolve the issue related to the P008E code