Failed charge port door open request switch (internal open circuit).; Damaged or disconnected wiring harness at the charge port door hinge or connector.; Corroded or loose electrical connector pins at the switch or control module.; Open circuit in the signal wire between the switch and the control module.; Water intrusion into the switch or connector causing high resistance.; Faulty control module not providing proper pull-up voltage or ground reference.; Physical damage to the door mechanism that prevents switch actuation.

DTC codes / P0Cxx · Hybrid propulsion / P0CCA

P0CCACharge Port Door A Open Request Switch Circuit High

Q: What does code P0CCA mean?

Charge Port Door A Open Request Switch Circuit High. P0CCA indicates that the charge port door open request switch circuit is reading a high voltage condition, which the control module interprets as an open circuit or a stuck-open switch. The vehicle's computer has detected a voltage above the expected threshold on the signal line from the charge port door switch, meaning the circuit is not completing as designed when the door is commanded to open.

P0CCA indicates that the charge port door open request switch circuit is reading a high voltage condition, which the control module interprets as an open circuit or a stuck-open switch. The vehicle's computer has detected a voltage above the expected threshold on the signal line from the charge port door switch, meaning the circuit is not completing as designed when the door is commanded to open.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaHybrid propulsion

Symptoms you may notice

The charge port door may fail to open automatically when requested, requiring manual release.
A warning light or message on the dash indicating a charge port door fault.
The charge port door may open unexpectedly or not latch securely.
Often no symptoms besides the warning light, especially if the door still operates manually.
Inability to start charging if the door position is part of the charging interlock logic.
Intermittent operation of the door depending on temperature or moisture.

Common causes, most likely first

Failed charge port door open request switch (internal open circuit).
Damaged or disconnected wiring harness at the charge port door hinge or connector.
Corroded or loose electrical connector pins at the switch or control module.
Open circuit in the signal wire between the switch and the control module.
Water intrusion into the switch or connector causing high resistance.
Faulty control module not providing proper pull-up voltage or ground reference.
Physical damage to the door mechanism that prevents switch actuation.

How to diagnose and fix it

Verify the fault is current by clearing codes and operating the charge port door while monitoring live data.
Inspect the charge port door switch connector for corrosion, loose pins, or water intrusion and clean or repair as needed.
Check the wiring harness from the switch to the control module for continuity and short to voltage; repair any opens or chafed wires.
Test the switch operation with a multimeter to confirm it opens and closes the circuit correctly; replace the switch if faulty.
Check the control module's ground and power supply to ensure it is providing the correct reference voltage.
If all circuits test good, substitute a known-good control module to rule out an internal fault.
After repair, clear codes and perform a full functional test of the charge port door, including automatic and manual operation.

Charge Port Door Switch Circuit Pitfalls

A high voltage reading on this circuit often results from a simple unplugged connector at the charge port door, which is easy to overlook when diagnosing more complex faults.
The switch may test fine with a multimeter but fail intermittently due to temperature-related expansion or vibration, so wiggle testing while monitoring live data is crucial.
Water intrusion into the charge port door switch is a common cause on vehicles that are frequently charged in wet conditions, leading to corrosion and high resistance.
This code can be set by a weak battery or charging system issue that causes the control module to misread switch inputs, so always check battery voltage first.
Replacing the charge port door switch without checking the wiring harness can lead to a repeat failure if the harness is chafed or pinched at the hinge point.

Can I keep driving with P0CCA?

The vehicle is generally safe to drive because the charge port door is not a safety-critical system, but you should avoid forcing the door open or closed manually to prevent further damage. If the door cannot be opened, charging may be impossible, so plan to have the fault repaired soon to maintain electric vehicle usability.

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.