Powertrain, generic (extended)

P2EAB Active Radiator Air Flow Control Module A Over Temperature

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

P2EAB means module A of the active radiator air flow system reports that its own electronics have overheated. Such smart actuators carry their motor driver on board and protect it: J2012 records the matching case for the grille shutter as P05C0, where the actuator switches its output stage off when the chip runs too hot. Typical triggers are a motor straining against ice, dirt or a jammed linkage, a mounting place close to the radiator in hot weather, or an internal fault. Hyundai and Kia's patent US11225900 shows where such modules sit, directly between bumper opening and radiator. No manufacturer documents P2EAB publicly. While the module is off, the flaps remain where they stopped; if they stay closed under load the engine can run hotter, otherwise fuel use and warm-up suffer.

Likely causes

Flaps blocked by ice, dirt or a damaged linkage, motor overloaded
High heat at the mounting place near the radiator
Internal fault in the module or its temperature sensing

Symptoms

  • Check engine lamp on, where the maker assigns a MIL
  • Flaps stop moving for a while
  • Higher coolant temperature under load if the flaps are stuck closed

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–600
Time0.3–2 h

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

Parts involved

active radiator airflow module a

Related codes

P2EAAP2EACU02C0P05C0

References: patents.google.com, patents.google.com, law.cornell.edu.