Powertrain, generic · Hybrid propulsion

P0C4E Drive Motor A Position Exceeded Learning Limit

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0C4E says the resolver offset of drive motor A was learned, yet the learned value is unacceptable. That offset lines up the zero point of the resolver with the rotor magnets. GM rejects a correction angle beyond 30 degrees, or a new value that differs from the stored one by more than 10 degrees; the learn happens at key-off with the motor under 20 rpm and over 192 V on the DC link. Volt and ELR tables rate it Type A, and from 2016 the deviation has to show up on five key-off cycles. Kia links P0C4E00 on 2022-24 Sorento PHEV AWD to a jerky change between electric and hybrid drive and cures it with a new transaxle plus updated hybrid control software (TSB TRA112). P0C17 is the case with no valid learn at all.

Likely causes

Resolver or rotor position shifted after replacing the motor, resolver stator or transaxle
Internal transaxle fault on affected Kia Sorento PHEV models (TSB TRA112)
Hybrid or motor control software that needs an update
Damaged resolver that delivers a shifted angle

Symptoms

  • Malfunction indicator lamp, often first noticed after a repair
  • Jerk or rough feel when switching between electric and hybrid drive
  • Reduced electric drive power

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–6,000
Time0–10 h

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

Parts involved

drive motor a position sensorhybrid control module

Related codes

P0C4FP0C17P0A3FP0A40

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov.