Worn or contaminated charge port door request switch contacts causing intermittent signal.; Damaged or chafed wiring harness at the charge port door hinge area due to repeated flexing.; Loose or corroded electrical connector at the request switch or control module.; Water intrusion into the switch or connector, leading to erratic continuity.; Failed charge port door request switch internal mechanism.; Faulty control module software or internal circuit issue (less common).; Physical damage to the charge port door assembly from impact or misuse.

DTC codes / P0Cxx · Hybrid propulsion / P0CCB

P0CCBCharge Port Door A Open Request Switch Circuit Intermittent/Erratic

P0CCB indicates that the charge port door open request switch circuit has an intermittent or erratic fault, meaning the computer sees the switch signal jumping between open and closed or dropping out unpredictably. The vehicle's control module monitors the voltage or continuity on the request switch circuit and sets this code when the signal does not match expected patterns during key-on or charging events.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaHybrid propulsion

Symptoms you may notice

Charge port door may not open when the request switch is pressed, requiring multiple attempts.
The charge port door may open unexpectedly or intermittently without a command.
A warning light or message on the instrument cluster indicating a charge port door fault.
Inability to start charging because the vehicle does not detect the door as open or closed correctly.
Often no symptoms besides the warning light, especially if the intermittent fault is not currently active.
The switch may feel sticky or unresponsive when pressed, though this is not always the case.

Common causes, most likely first

Worn or contaminated charge port door request switch contacts causing intermittent signal.
Damaged or chafed wiring harness at the charge port door hinge area due to repeated flexing.
Loose or corroded electrical connector at the request switch or control module.
Water intrusion into the switch or connector, leading to erratic continuity.
Failed charge port door request switch internal mechanism.
Faulty control module software or internal circuit issue (less common).
Physical damage to the charge port door assembly from impact or misuse.

How to diagnose and fix it

Inspect the charge port door request switch for physical damage, contamination, or sticking, and clean or replace if necessary.
Check the wiring harness and connector at the charge port door for chafing, corrosion, or loose pins, repairing as needed.
Measure resistance or voltage on the request switch circuit while operating the switch to identify intermittent opens or shorts.
Perform a wiggle test on the harness and connectors while monitoring switch signal with a scan tool to reproduce the fault.
Check for water intrusion in the switch and connector, and dry or reseal as required.
If the switch and wiring are good, test the control module input circuit and replace the module only if confirmed faulty.
Clear the code and verify the repair by cycling the charge port door multiple times and monitoring for code return.

Intermittent switch faults often misdiagnosed

A common mistake is replacing the charge port door latch or actuator when the actual fault is the request switch or its wiring, so always test the switch signal first.
The code can set from a momentary glitch that leaves no current symptoms, so a thorough wiggle test of the harness at the door hinge is essential to catch intermittent opens.
Water intrusion into the charge port door switch is a frequent cause on vehicles that are parked outside or driven in wet conditions, and it may not be obvious until the connector is opened.
Some vehicles use a hall-effect or proximity switch rather than a mechanical contact, so a scan tool that can display live switch status is more reliable than a simple ohmmeter.
The fault may be caused by a poor ground connection at the charge port door assembly, which can mimic a switch failure and is often overlooked.

Can I keep driving with P0CCB?

The vehicle remains safe to drive because this fault only affects the charge port door opening request, but you should avoid forcing the door open manually to prevent damage. Schedule diagnosis soon if the door fails to open reliably, as it can prevent charging.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.