P008D
Fuel Cooler Pump Control Circuit Low
Fuel system / fuel cooling
Generic OBD-II
High
What it means
P008D sets when the ECM sees low voltage (a short-to-ground or open) in the control circuit for the fuel cooler pump. That pump circulates fuel through a cooler to manage fuel temperature, so a fault here is usually just a warning light with no immediate driving symptoms. The common causes are a failed pump, damaged wiring, or a corroded connector — it won't stop the engine from running.
High
Can I keep driving? The engine runs and drives normally; this affects fuel-temperature management rather than immediate performance.
Common symptoms
What you'll notice
- Check-engine light on
- Often no noticeable driving symptoms
- Possible high fuel-temperature warning on equipped vehicles
Common causes
Most likely first
- Faulty fuel cooler pumpLikely
- Short-to-ground or open in the pump control wiringCommon
- Corroded or loose connector at the pumpCommon
- Failed control relay or ECM/PCM driver (least likely)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and confirm the code is for the fuel cooler pump control circuit.
- Inspect the pump connector and wiring for a short-to-ground, open, or corrosion.
- Confirm the pump receives proper power and ground when commanded on.
- Test the pump's resistance/operation against spec; replace it if faulty.
- Repair wiring or connector faults, clear the code, and re-test.
FAQ
Quick answers
Is it safe to drive with P008D?+
Generally yes — the engine runs normally. The fuel cooler manages fuel temperature, so have it repaired to avoid heat-related fuel-system issues over time.
Can I just clear P008D?+
It will come back until the pump or wiring fault is fixed, since the circuit reads low continuously.
Related codes
Often seen with P008D
Read & clear P008D yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX