Powertrain, generic · Hybrid propulsion

P0D61 Hybrid/EV Battery Pack Cooling Fan 2 Sense Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0D61 reports that the feedback signal of battery cooling fan 2 sits at or near zero. In Volkswagen's 2014 Touareg Hybrid the battery controller sets it once the fan 2 feedback voltage drops below 0.1 V; the matching fan 1 code is P0BC9. Such a flat reading comes from a feedback wire shorted to ground, a feedback stage inside the fan that has failed low, or a fan that has no supply and therefore produces no signal at all. Unlike P0D60, where a valid signal merely disagrees with the command, here the value is simply out of range at the bottom; the opposite end is P0D62. Because the controller cannot tell whether fan 2 still moves air, it may treat the cooling as lost and limit battery power under load or in warm weather.

Likely causes

Fan 2 feedback wire chafed through and shorted to ground
Fan 2 without supply (fuse, relay or supply wire), so no signal is generated
Feedback output of the fan 2 electronics failed low or motor seized
Feedback input of the battery control module defective

Symptoms

  • Hybrid system warning or check engine light
  • Fan 2 audibly silent although battery cooling is requested
  • Reduced electric power, especially in warm conditions

Repair estimate

DifficultyMediumDIY possible
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

P0D62P0D60P0D5FP0D63P0BC9

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