Powertrain, generic · Hybrid propulsion

P0A97 Hybrid/EV Battery Pack Cooling Fan 2 Performance/Stuck Off

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0A97 is the fan 2 counterpart of P0A82: the second battery cooling fan is electrically reachable but does not reach its requested speed or does not turn at all. No manufacturer documents this exact code publicly. CARB requires a functional check of battery cooling where feasible, and the methods are published for fan 1: GM compares commanded and measured speed (its sense code P0BC8), Toyota judges the deviation of the feedback-corrected duty, Honda compares expected and actual battery temperature rise. Blocked air paths and worn motors are the usual causes. Circuit faults on fan 2 are P0A96, P0A99 and P0A9A; the stuck-on case is P0A98. With one fan weak the pack runs warmer.

Likely causes

Dust or debris on fan 2 or in its duct
Worn or seized fan 2 bearings
Blocked air intake to the battery
Faulty speed feedback from fan 2

Symptoms

  • Hybrid warning or check engine light
  • Weak airflow from the battery vents
  • Reduced electric assist in warm weather

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–700
Time0.5–3.5 h

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

Parts involved

hybrid battery cooling fan 2fan motorair duct

Related codes

P0A82P0A96P0A98P0C32P0A7E

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