P215C code meaning
Output Shaft Speed - Wheel Speed Correlation
Powertrain system Generic code P21xx codes Check engine light
What P215C means
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.
P215C at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.3 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P215C
- Check engine light on
- Harsh or irregular shifting
- Grinding noise or loss of all-wheel drive (transfer unit damage)
Common causes of P215C
- Most likelyTransmission control software too sensitive, for example under braking (FCA bulletins)
- PossibleMechanical driveline fault such as a broken transfer unit spline (Jeep Cherokee)
- PossibleFaulty output shaft speed sensor or wiring
- Less likelyFaulty wheel speed sensor or mismatched tire sizes
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Output shaft speed sensorWheel speed sensorTransmission control module
What each part of P215C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 1 | Area: fuel and air metering. |
| 5C | The exact fault in that area. |
What to do next
- Note P215C and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P215C
What does P215C mean?
P215C means "Output Shaft Speed - Wheel Speed Correlation". P215C compares the transmission output shaft speed with the output speed calculated back from the wheel sensors. It is a generic code, so it means the same on every make.
Is it safe to drive with P215C?
Drive gently and only to a workshop. With P215C the car can go into limp mode (reduced power) to protect itself.
Will P215C fail an emissions test?
Yes, it can. P215C is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P215C to fix?
Difficulty: medium. A typical repair takes 0.3 to 6 hours of work. This is a job for a workshop.
Will P215C clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.