P0CC9 means the open request switch of charge flap A reads lower than any valid state, which typically results from the signal wire touching ground or from a switch that has failed short. In the Chevrolet Volt tables of 2011 to 2013, GM sets it once the reading drops under 22.9 percent of the reference in six of eight samples; the code is Type B, so the warning lamp follows after two consecutive trips. The monitor belongs to the hybrid control module 2 (VICM). The opposite fault, a reading above 94.5 percent, is P0CCA, and a value stuck between valid states is P0CC7. Because a grounded signal may look like a permanently pressed button, the flap can fail to respond or the module may stay awake longer than intended.
Medium severity. Can I keep driving?If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
Symptoms
- Charge flap does not react to the button
- Warning lamp after two trips (GM Volt)
Most likely causes
- Signal wire chafed through to body ground
- Open request switch shorted internally
- Water in the switch connector creating a leakage path to ground
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
What each character of P0CC9 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- C: Subsystem depends on the code range
- C9: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0CC9?
If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
What causes code P0CC9?
The most common causes are: signal wire chafed through to body ground; open request switch shorted internally; water in the switch connector creating a leakage path to ground.
Related codes
- P0CC6Charge Port Door A Open Request Switch Wake-Up Circuit
- P0CC7Charge Port Door A Open Request Switch Circuit
- P0CCACharge Port Door A Open Request Switch Circuit High
- P0CC8Charge Port Door A Open Request Switch Circuit Performance
- P2E95Charge Port Door B Open Request Switch Circuit Low
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.