Powertrain, generic · Hybrid propulsion

P0C60 Drive Motor B Position Sensor Circuit B Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0C60 indicates that the second winding of the motor B resolver (Circuit B) is electrically intact but delivers values the controller rejects as unrealistic, for example an amplitude that no longer agrees with the first winding or an angle that jumps against the measured speed. No manufacturer documents this code publicly. The idea behind it is the separate rationality test that CARB demands for input sensors, apart from circuit and range checks. Practical suspects are contact resistance at the plug, a resolver stator that has moved or been damaged, and stray coupling from the high-voltage phase cables onto a poorly shielded line. P0C61 to P0C63 cover low, high and sporadic Circuit B faults, P0A46 the combined signal.

Likely causes

Raised contact resistance at the motor B resolver connector
Motor B resolver stator shifted or damaged
Interference from the high-voltage phase cables through a damaged shield

Symptoms

  • Hybrid system warning with check engine lamp
  • Motor B output limited
  • Vibration or noise when motor B is under load

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–2,500
Time1.5–6 h

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

Parts involved

drive motor b position sensor bwiring harnesshybrid control module

Related codes

P0C5FP0C61P0C62P0C63P0C56P0A46

References: law.cornell.edu, en.wikipedia.org.