Powertrain, generic (extended)

P2B32 Fan 2 Stuck On

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

With P2B32 the controller finds that the second radiator fan keeps operating, or does not change state, against its command. On conventional cars this usually traces back to a relay stuck closed, a fan 2 control line shorted to its active level or a module that has lost control of the motor. Audi documents P2B32 for the RS e-tron GT and the plain e-tron GT of model years 2022 to 2024 as symptom 59342 in thermal management J1024: debris entering via the wheel housing liner blocks the fan, which leads to poor cabin climate, reduced drive power or incomplete charging; the cure is a revised fan, shroud and liner set for the affected side. CARB requires fan outputs to be checked for correct reaction to commands. A fan that never stops may also drain the 12 V battery. P2B31 covers fan 2 doing too little, P2B30 fan 1 stuck on.

Likely causes

Debris from the wheel housing jamming fan 2 (Audi e-tron GT)
Fan 2 relay stuck closed
Fan 2 control line shorted to its active level

Symptoms

  • Fan audible after the vehicle is switched off
  • Reduced heating, cooling or charging on electric vehicles
  • Flat 12 V battery after parking

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€30–1,200
Time0.5–4 h

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

Parts involved

cooling fan 2fan relay 2ecm

Related codes

P2B31P2B30P0481P0694P2CBA

References: static.nhtsa.gov, static.nhtsa.gov, law.cornell.edu.