Powertrain, generic · Hybrid propulsion

P0CC9 Charge Port Door A Open Request Switch Circuit Low

Check engine lightOn
EmissionsNot relevant
Drive cycleRequired
Limp modeNo

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.

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

Symptoms

  • Charge flap does not react to the button
  • Warning lamp after two trips (GM Volt)

Repair estimate

DifficultyMediumDIY possible
Parts and labour€50–300
Time0.5–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

charge port door a request switchwiring harnesshybrid control module

Related codes

P0CC6P0CC7P0CCAP0CC8P2E95

References: gsi.ext.gm.com, gsi.ext.gm.com.