Skip the auto shop - Our mechanics make house calls

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 Long Does a Vacuum Brake Booster Check Valve Last?
The braking system on your car requires a lot of pressure. The vacuum booster is one of the main sources of this pressure. This booster will take the pressure that...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: P0442

As you may already know, this may be related to a faulty or leaking gas cap, however this can also be related to several other factors such as the following: A non-conforming gas cap (i.e. not factory/original brand) A...

Q: Knock sensor 1

Hello there. The knock sensor code can have various causes on your 2004 Chevrolet Silverado. The knock sensor circuit low, bank 1 code is telling us that the knock sensor in bank 1 that it has low circuit voltage. This...

Q: Code p0421

Are there other codes set? This code, by itself, P0421 indicates that the engine management system detected the catalytic converter is performing below expected standards. This means the engine is sending contaminants (unburned fuel, oil fumes, etc.) down the exhaust,...