What Does P008E Mean?
The ECM has detected a high voltage condition in the fuel cooler pump control circuit. This typically indicates a short to battery voltage in the pump wiring or an open circuit on the ground side. The fuel cooler pump may not operate at all or may run uncontrolled. The driver may not notice immediate symptoms but fuel temperature may rise during extended driving or heavy loads.
Common Causes
35%
Short to battery voltage in the fuel cooler pump control wiring
25%
Open ground circuit for the fuel cooler pump
20%
Failed fuel cooler pump with open-circuit motor winding
12%
Damaged connector with spread or backed-out pins
8%
ECM driver circuit stuck in the high state
Diagnostic Steps
1
Disconnect the fuel cooler pump and check for voltage on the control wire at the harness connector with key on. Voltage present when the ECM is not commanding the pump indicates a short to power.
2
Verify the pump ground circuit by checking continuity from the pump ground wire to a known good chassis ground point. An open ground will cause a high-voltage reading on the circuit.
3
Measure the pump motor resistance. An OL (open loop) reading indicates a failed motor winding.
4
Inspect the wiring harness routing for contact with other power wires, especially near the battery, fuse box, or alternator output wires where chafing could create a short to B+.
5
Check the pump connector for backed-out pins or spread terminals that could cause intermittent open circuits or cross-connections.
Estimated Repair Cost
$150 - $550
Parts + labor, varies by vehicle and location
The ECM has detected a high voltage condition in the fuel cooler pump control circuit. This typically indicates a short to battery voltage in the pump wiring or an open circuit on the ground side. The fuel cooler pump may not operate at all or may run uncontrolled. The driver may not notice immediat...
The most common cause of P008E (Fuel Cooler Pump Control Circuit High) is: Short to battery voltage in the fuel cooler pump control wiring
Typical repair costs for P008E range from $150 to $550, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive under normal conditions. Elevated fuel temperatures are the main concern during sustained high-load or hot-weather driving. No immediate safety hazard but the fuel system may run less efficiently until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P008E to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel System
Difficulty
Type
Generic (SAE)
Recommended Tools
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