The position sensor of charge flap A tells the vehicle whether the flap is open or shut; GM has patented a version in which a magnet on the flap acts on a magnetic sensor in the housing. P0CCC is the general circuit code for this sensor. On the 2011 to 2013 Chevrolet Volt it sets when the reading lands in the invalid window of 65.9 to 81.6 percent of reference in six of eight samples, as a Type B code with the lamp after two trips. GM uses the flap state as an enable condition for the control pilot check P0CF4, which is why the sensor is part of the OBD system there; GM's 2016 hybrid table no longer lists these flap codes. Short circuits have their own codes, P0CCE (low) and P0CCF (high). The driver may see a false flap-open message or a charging refusal.
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
- Flap-open message although the flap is closed
- Warning lamp after two trips (GM Volt)
- Charging or charge pilot checks may be blocked
Most likely causes
- Faulty flap position sensor or switch
- Sensor or its harness pigtail not fully seated in the housing
- Damaged wire or corroded connector in the sensor circuit
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 P0CCC means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- C: Subsystem depends on the code range
- CC: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0CCC?
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 P0CCC?
The most common causes are: faulty flap position sensor or switch; sensor or its harness pigtail not fully seated in the housing; damaged wire or corroded connector in the sensor circuit.
Related codes
- P0CCDCharge Port Door A Position Sensor Circuit Performance
- P0CCECharge Port Door A Position Sensor Circuit Low
- P0CCFCharge Port Door A Position Sensor Circuit High
- P0CD0Charge Port Door A Position Sensor Circuit Intermittent/Erratic
- P0CF4Control Pilot Circuit Range/Performance
- P2E98Charge Port Door B Position Sensor Circuit
Sources
- gsi.ext.gm.com: 11OBDG01 HYBRID Diagnostics
- gsi.ext.gm.com: 16OBDG01 Hybrid Diagnostics
- patents.google.com: en
- static.nhtsa.gov: MC 10116921 9999
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.