DOBD DashX ☰ Browse all codes
P04BB

Fuel Fill Door Lock Control Circuit/Open

Generic OBD-II

Common symptoms

What you'll notice

Common causes

Most likely first

  1. Faulty fuel fill door lock solenoid
  2. Broken or disconnected wiring in the fuel fill door lock circuit
  3. Faulty fuel fill door lock switch
  4. Faulty fuel fill door lock control module
  5. Corroded or dirty electrical connections in the fuel fill door lock circuit

How to diagnose & fix

Work through it in order

  1. Fuel fill door cannot be locked
  2. Fuel fill door cannot be opened
  3. Fuel fill door lock is engaged but does not hold the door closed securely
  4. Fuel fill door lock mechanism makes a noise or a clicking sound
  5. Fuel fill door lock indicator light stays on or flashes.

Read & clear P04BB yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play