Powertrain, generic (extended)

P2EAA Active Radiator Air Flow Control Module A Control Circuit Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

The active radiator air flow system meters cooling air with motor-driven flaps between bumper opening and radiator; J2012 keeps its control module apart from the grille shutter modules (P05C0, U0284). Hyundai and Kia's patent US11225900 shows such a system with two flap zones, each moved by its own actuator according to vehicle speed, outside and coolant temperature and refrigerant pressure. P2EAA means the control circuit of module A responds but does not behave as expected, for instance a drive signal outside its plausible range. No manufacturer documents P2EAA publicly. GM's smart shutter actuators show the comparable setup: they talk to the engine module over LIN, which only judges them with a supply between 11 and 32 V. A fault mostly costs fuel and warm-up speed.

Likely causes

Corroded or loose connector in the exposed front-end area
Supply or ground of the module outside its range
Internal fault in control module A

Symptoms

  • Check engine lamp on, where the maker assigns a MIL
  • Flaps stay in one position
  • Slower warm-up or slightly higher fuel consumption

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–600
Time0.5–2 h

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

Parts involved

active radiator airflow module alin buswiring harness

Related codes

P2EABP2EACU02C0U05C1P05A3

References: patents.google.com, gsi.ext.gm.com, law.cornell.edu.