Powertrain, generic (extended)

P215C Output Shaft Speed - Wheel Speed Correlation

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P215C compares the transmission output shaft speed with the output speed calculated back from the wheel sensors. Unlike P215B it does not judge the final vehicle speed but the agreement between these two measured sources. GM's 2019 hybrid tables set it as Type B, MIL after two trips, when the output shaft and the average from wheel and motor speeds differ by more than 50 or 60 rpm for 0.23 s. FCA uses the code widely: bulletin 21-031-14 updated the TCM of the 2014 Charger and 300 AWD with the 845RE gearbox because P215C set during braking, 21-022-23 reprograms the 2023 Charger 8HP50 for the same code, and on the 2014–2017 Jeep Cherokee a broken power transfer unit input spline produces P215C with P1720 and grinding noises, covered by a warranty extension. Shift quality or AWD functions may suffer.

Likely causes

Transmission control software too sensitive, for example under braking (FCA bulletins)
Mechanical driveline fault such as a broken transfer unit spline (Jeep Cherokee)
Faulty output shaft speed sensor or wiring
Faulty wheel speed sensor or mismatched tyre sizes

Symptoms

  • Check engine light on
  • Harsh or irregular shifting
  • Grinding noise or loss of all-wheel drive (transfer unit damage)

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–2,500
Time0.3–6 h

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

Parts involved

output shaft speed sensorwheel speed sensortransmission control module

Related codes

P215BP215AP0720P0721P0722P0723

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