Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. P008C OBD-II Trouble Code: Fuel Cooler Pump Control Circuit/Open

P008C OBD-II Trouble Code: Fuel Cooler Pump Control Circuit/Open

diagnostic check engine light

A P008C trouble code is related to a diesel engine’s fuel cooler pump designed to maintain colder fuel temperatures.

What the P008C code means

P008C is an OBD-II code for a open circuit problem with the fuel cooler system. This code is illuminated to alert the driver that a connection among the controller circuit is broken, either from an unplugged connector, damaged connector, or damaged wire.

What causes the P008C code?

The most common causes for a P008C are:

  • Faulty fuel cooler pump connections
  • Faulty fuel cooler wiring
  • Faulty fuel cooler pump

What are the symptoms of the P008C code?

A P008C will typically not cause any noticeable symptoms other than a check engine light. In some cases, it can cause surging acceleration from a lack of fuel cooling.

How does a mechanic diagnose the P008C code?

Your mechanic will start with a visual inspection of the fuel cooler system, looking for unplugged connections and or damaged wiring, repairing as necessary. If connections and wiring appear to be in good condition, your mechanic will test the wiring and connectors using a digital multi meter. If a fault in the voltage is found, that section of wiring or connection will be replaced. If not, it may be necessary to replace the fuel cooler pump itself.

Common mistakes when diagnosing the P008C code

A P008C may be an intermittent issue from wear and tear. Getting rid of the code may be as simple as clearing it, running fuel treatment, and resetting the engine computer.

How serious is the P008C code?

Hot fuel temperatures are not desirable and can cause excessive wear on other fuel components. They can also cause poor acceleration which can be dangerous.

What repairs can fix the P008C code?

The most common repairs for a P008C are as follows:

  • Repairing or replacing damaged fuel cooler pump wiring
  • Repairing or replacing damaged fuel cooler circuit wiring
  • Replacing the fuel cooler pump

Additional comments for consideration regarding the P008C code

P008C codes are exceptionally common with Ford Powerstroke diesels, and even more so with the 6.4 liters from 2008 through 2010.

Need help with a P008C code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P0477 OBD-II Trouble Code: Exhaust Pressure Control Valve Low
P0477 code means that the PCM has detected an abnormally low voltage reading often due to the exhaust back pressure control valve circuit.


Related questions

Q: P0741 OBD code

Hello, thanks for writing in about your Volkswagen Passat. Trouble code P0741 indicates: Torque Converter Clutch Circuit Performance or Stuck Off. If you need help with getting this fixed, consider YourMechanic, as one of our mobile technicians can come to...

Q: car cranks but doesn't start

When this situation occurs, the first thing I look for is checking the fuses or electrical relays to the ECU. In general, the most common cause of being unable to connect to the scanner or to the ECU is caused...

Q: How do I replace the airflow sensor on my 1985 olds 98

You definitely want to reset the computer when you make a repair like this. Resetting the computer will allow it to check the new component for proper operation and set a Diagnostic Trouble Code if there is still a problem....