What is the P008E fault code?
The P008E fault code applies to all vehicle manufacturers and means “Fuel Cooler Pump Control Circuit High.”
Background Information: The purpose of the fuel cooler is to lower fuel temperature, thereby increasing the viscosity of low-sulfur diesel. This fault code indicates that the fuel cooler pump control circuit voltage is above the calibrated maximum value.
What are the symptoms of code P008E?
Symptoms of the P008E engine fault code may include:
- Decreased engine performance
- Hesitation or surging during acceleration or at idle
- Check Engine Light illuminated
- Increased fuel consumption
- Abnormal noises from the fuel cooling pump
What are the possible causes of the P008E code?
Possible causes for this code include:
- Faulty fuel cooling pump
- Corroded or damaged connectors
- Faulty or damaged wiring
- Faulty PCM (Powertrain Control Module)
How to diagnose P008E?
- Test the fuel cooling circuit for a short to power.
- Check the mechanical operation of the fuel cooler pump.
- Inspect the wiring harness for damage.
- Test the ECU’s fuel cooling control output.
- Check for aftermarket fuel system components.
P008E Repair Solutions
- First, visually inspect the fuel cooler pump, wiring, and connections for obvious signs of damage or wear.
- Use a multimeter to test the voltage levels in the fuel cooler pump control circuit to determine if they are within specified parameters.
- If the voltage is too high, check for a faulty pump control module and replace it if necessary.
- Test the fuel cooler pump itself to ensure it is functioning correctly; if found to be faulty, replace it.
- Use an OBD2 scanner tool to clear the diagnostic trouble codes (DTCs), and then test drive the vehicle to confirm that the issue has been resolved.
Vehicles Most Commonly Affected by Code P008E
This DTC is most commonly reported in modern diesel vehicles equipped with fuel cooling systems, but it can also be found in some high-performance gasoline engines. The following applications are typically affected:
- Ford Super Duty trucks (diesel engines, 2011+)
- Trucks equipped with GM Duramax (Chevrolet Silverado, GMC Sierra)
- Volkswagen and Audi TDI models
- Land Rover and Jaguar diesel SUVs
- RAM trucks equipped with Cummins diesel engines
Note: This is not an exhaustive list; other vehicles with fuel cooling pumps may also experience this code.
Frequently Asked Questions About the P008E Code
Is it safe to drive with the P008E code?
Generally, yes, but with limitations. In most cases, P008E does not immediately lead to driving problems, and you can continue to drive the vehicle for short distances. However, if you frequently drive under high load, in hot weather, or while towing, ignoring the fault code can lead to fuel overheating, reduced engine performance, and in rare cases, vapor lock. It is recommended to repair the issue as soon as possible to avoid potential long-term damage.
How much does it cost to diagnose the code?
Diagnosing the P008E code typically requires 1.0 hour of labor. Labor rates vary by location, vehicle, and repair shop. Many shops charge between 150 per hour; dealerships and shops in metropolitan areas may charge more, while independent shops may charge less.
How much does it cost to repair P008E?
The cost to repair the high fuel cooler pump control circuit issue can vary depending on the specific cause and the vehicle’s make and model. On average, the cost for parts and labor ranges from approximately 500. Keep in mind that labor rates at auto repair shops can vary, so it is advisable to obtain quotes from several local shops to ensure a fair price.
Can I simply clear the code and keep driving?
Clearing the fault code may temporarily turn off the Check Engine Light, but the code will likely reappear if the underlying issue is not resolved. Sustained high fuel temperatures can compromise long-term reliability.
Does P008E mean my engine will overheat?
Not directly. This code relates to the fuel cooling system, not the engine coolant circuit. However, high fuel temperatures can affect performance and, in rare cases, may cause hard starting or fuel system issues, especially under high load.