The P008E: Fuel Cooler Pump Control Circuit High refers to an issue with the fuel cooler pump control circuit, specifically indicating that the voltage in the circuit is higher than expected. This problem can be caused by high voltage in the fuel cooler pump control circuit, a faulty fuel cooler pump, wiring issues such as shorts or opens, or a malfunctioning Powertrain Control Module (PCM). In simple terms, when this code appears, it means that the system responsible for controlling the fuel cooler pump is receiving too much voltage, which could impact the cooling of the fuel and, consequently, engine performance.
P008E – Quick Overview
| Meaning | P008E: Fuel Cooler Pump Control Circuit High |
| Is it serious? | Yes, this code can be serious as it may affect the fuel cooling system, potentially leading to fuel overheating and engine performance issues. |
| Possible causes | – High voltage in the fuel cooler pump control circuit – Faulty fuel cooler pump – Wiring issues such as shorts or opens – Faulty PCM |
| How to diagnose? | – Test the fuel cooler pump control circuit for high voltage. – Inspect the wiring and connectors for defects. – Test the fuel cooler pump for proper operation. – Replace or repair the faulty components as necessary. |
P008E Meaning
The P008E: Fuel Cooler Pump Control Circuit High code indicates that there is an excessive voltage issue within the fuel cooler pump control system. This could be due to an over-voltage condition in the circuit, a faulty pump, or wiring and connection issues. When this system is receiving too much voltage, it can lead to improper operation of the fuel cooler pump, which may affect engine performance and fuel efficiency.
Step-by-step diagnostic guide
Follow the outline procedure to diagnose this DTC by eliminating possible causes one by one.
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check if there are any other related codes present. These might provide additional clues about the problem. | OBD-II Scanner |
| Test the Fuel Cooler Pump Control Circuit for High Voltage | Measure the voltage in the fuel cooler pump control circuit to ensure it is not exceeding the expected range. | Multimeter, Manufacturer’s Specifications |
| Inspect Wiring and Connectors | Inspect the wiring and connectors related to the fuel cooler pump control circuit for any signs of defects, shorts, opens, or corrosion. | Flashlight, Multimeter |
| Test the Fuel Cooler Pump | Test the fuel cooler pump for proper operation, ensuring it meets the manufacturer’s specifications. | Multimeter, Manufacturer’s Specifications |
| Repair or Replace Faulty Components | If any components, wiring, or the pump are found to be faulty, repair or replace them as necessary. If the PCM is faulty, consider replacing it. | Wire Strippers, Electrical Tape, Replacement Wires/Connectors, Replacement Fuel Cooler Pump or PCM |
| Clear the Code and Test Drive | After completing the necessary repairs, clear the P008E code using the OBD-II scanner. Take the vehicle for a test drive to ensure the issue is resolved and the code does not return. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure the P008E code has not reappeared. If the code returns, further diagnosis may be required. | OBD-II Scanner |
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