Powertrain, generic · Hybrid propulsion

P0D62 Hybrid/EV Battery Pack Cooling Fan 2 Sense Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0D62 is set when the feedback of battery cooling fan 2 rises above its plausible maximum. Volkswagen gives the threshold for the 2014 Touareg Hybrid as a fan 2 feedback voltage above 3.45 V, mirroring P0BCA for fan 1. A real fan cannot drive the signal that high, so the cause is electrical: the feedback wire touching a supply or another signal, a missing ground at the fan so the line floats up, or fan electronics stuck at their upper output. Check the ground and the harness routing before condemning the fan. The bottom end of the range is P0D61, while P0D60 covers a valid signal that disagrees with the command. With the speed information unusable, the controller cannot verify cooling and may restrict battery power.

Likely causes

Fan 2 feedback wire shorted to a supply or neighbouring signal
Open ground at fan 2 letting the feedback line float high
Fan 2 electronics stuck at their upper feedback level
Feedback input of the battery control module defective

Symptoms

  • Hybrid system warning or check engine light
  • Electric power limited when the battery gets warm
  • Fan 2 may still run normally

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€40–500
Time0.5–2.5 h

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

Parts involved

hv battery cooling fan 2 sensewiring harnessbms

Related codes

P0D61P0D60P0D5FP0D63P0BCA

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