P2A0F

Fuel Supply Heater Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–67 (est.)

Symptoms

Difficulty starting the engine in cold weather
Unstable engine operation at idle
Reduced engine power
Check Engine indicator on the dashboard

Causes

Fuel heating element malfunction
Open or short circuit in the heater circuit
Problems with the heater relay or fuse
Engine ECU malfunction
Poor contact in heater circuit connectors

How to Fix

Check fuse and heater relay
Test heater circuit continuity
Measure the resistance of the heating element
Check the control signal from the ECU
Replace faulty fuel heater if necessary

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