P04CB

Fuel Fill Door Open Request Sensor/Switch Circuit High

Severity

✅ Low

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$22–56 (est.)

Symptoms

Check Engine Light Is On
Problems with refueling
EVAP system malfunction

Causes

Fuel tank door opening request sensor/switch malfunction
Open or short circuit in wiring harness
Poor connection or corroded contacts
Engine control unit (ECU) malfunction

How to Fix

Check the condition of the fuel tank door opening request sensor/switch
Inspect the wiring harness for damage
Check connections and contacts for corrosion
If necessary, replace the sensor or repair the wiring harness
Reset the error and check if it returns

Related codes

P0442 P0455 P0456