Faulty or worn charge port door open request switch or button; Loose, corroded or damaged connector at the switch or control unit; Chafed, broken or intermittently shorted wiring in the switch circuit; Water ingress or contamination in the switch or charge port door assembly; Low or unstable supply voltage or poor earth to the switch or control unit; Fault in the control unit that reads the switch input, or outdated software (model dependent).

P0CCB

Charge Port Door A Open Request Switch Circuit Intermittent/Erratic.

Generic
Powertrain
Generic code
Low severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
C: AreaHybrid propulsion
CB: FaultThe specific fault in that area

What it means

P0CCB is a generic powertrain code meaning the control unit has seen an intermittent or erratic signal from the charge port door A open request switch circuit. The switch is the input that asks for the charge port door to open, and the signal has dropped out, flickered or jumped between states in a way that does not match a normal button press. Exact switch type, location and logic depend on the model.

Symptoms

Charge port door will not open, or opens only sometimes
Charge port door opens or tries to open without being asked
Warning light or message about the charging system or charge port
Charging cannot be started because the door or inlet cannot be reached
Fault comes and goes, perhaps with vibration, damp or temperature changes

Possible causes

Faulty or worn charge port door open request switch or buttonlikely
Loose, corroded or damaged connector at the switch or control unitlikely
Chafed, broken or intermittently shorted wiring in the switch circuitpossible
Water ingress or contamination in the switch or charge port door assemblypossible
Low or unstable supply voltage or poor earth to the switch or control unitpossible
Fault in the control unit that reads the switch input, or outdated software (model dependent)rare

How to diagnose

Read all stored and pending codes and note freeze frame data, then check for other charging, door or low voltage codes
Ask when the fault occurs (wet weather, after washing, bumps, cold) and try to reproduce it
Visually inspect the charge port door, switch and surrounding area for damage, moisture, dirt or corrosion
Check the switch and control unit connectors for loose pins, green or white corrosion, and water
Wiggle test the harness near the switch and door hinge while watching the switch status in live data
Check the 12 V battery condition and charging, as low voltage can cause erratic inputs
Test the switch circuit for supply, signal, earth, resistance and shorts using the manufacturer's wiring diagram
Operate the switch and compare live data to the expected states for your model, then check for software updates if the circuit tests good

How to fix

Replace the faulty charge port door open request switch
Clean, repair or replace corroded or damaged connectors and terminals
Repair or replace damaged wiring in the switch circuit
Dry out, seal or replace the door or switch assembly if water has got in
Restore a healthy 12 V supply by charging or replacing the battery and repairing poor earths
Update the control unit software if the manufacturer lists it as a known fix, or replace the unit only after all else is proven good

Can I keep driving?

Low severity

The car can normally be driven as the fault affects the charge port door request, not drive safety. Book it in soon, as you may be unable to open the port to charge, so keep enough charge in hand.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.