P04BD

Fuel Fill Door Lock Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Inability to open the fuel tank cap
Error indication on the dashboard
Problems with the EVAP system

Causes

Open or short circuit in wiring harness
Fuel cap lock solenoid malfunction
Poor contact in circuit connectors
Engine control unit (ECU) malfunction

How to Fix

Check the wiring harness for damage
Check the operation of the fuel tank cap lock solenoid
Check the contacts in the circuit connectors
Replace solenoid or wiring harness if necessary
Reset the error and check if it returns

Related codes

P0442 P0455 P0456