The P008C: Fuel Cooler Pump Control Circuit Open refers to an issue with the fuel cooler pump control circuit, specifically indicating that there is an open circuit. This problem can arise from an open circuit in the fuel cooler pump control, 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 not completing the circuit, which could affect the cooling of the fuel and, consequently, engine performance.
P008C – Quick Overview
| Meaning | P008C: Fuel Cooler Pump Control Circuit Open |
| 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 | – Open circuit in the fuel cooler pump control – Faulty fuel cooler pump – Wiring issues such as shorts or opens – Faulty PCM |
| How to diagnose? | – Inspect the fuel cooler pump and control circuit for continuity. – Check the wiring and connections for defects. – Test the fuel cooler pump for proper operation. – Replace or repair any faulty components. |
P008C Meaning
The P008C: Fuel Cooler Pump Control Circuit Open code indicates that there is an open circuit within the fuel cooler pump control system. This could be due to a break in the wiring, a faulty pump, or a problem with the PCM. When this system isn’t functioning properly, it can lead to inadequate cooling of the fuel, 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 |
| Inspect the Fuel Cooler Pump and Control Circuit | Inspect the fuel cooler pump and its control circuit for continuity. Ensure that there are no open circuits. | Multimeter, Manufacturer’s Specifications |
| Check Wiring and Connections | Inspect the wiring and connections related to the fuel cooler pump control circuit for any signs of defects, shorts, or opens. | Flashlight, Multimeter |
| Test the Fuel Cooler Pump | Test the fuel cooler pump for proper operation, ensuring it is functioning according to 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 P008C 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 P008C code has not reappeared. If the code returns, further diagnosis may be required. | OBD-II Scanner |
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I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko