P0C1A code meaning
Drive Motor B Torque Delivered Performance
Powertrain system Generic code P0Cxx codes Check engine light
What P0C1A means
P0C1A compares the torque command for motor B with the torque the motor control processor calculates as actually delivered. GM's 2016, 2018 and 2019 tables set it when the difference exceeds 132 Nm for 0.1875 s in a 0.2 s window, Type A, one trip, and only while listed resolver and motor control faults are inactive. The 2011 Volt and 2012 two-mode tables also list it, the trucks with a three-phase current sum above 110 A. Chrysler documents it on the 2017 to 2023 Pacifica Hybrid: with resolver codes P0A3F, P0A43 or P0A45 it points to a short in the internal wiring connector of the eFlite transmission, which is replaced. P0C19 is motor A. Expect limp mode.
P0C1A at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 10 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0C1A
- Malfunction indicator lamp
- Vehicle in limp mode with reduced propulsion
- Hybrid system warning, engine runs more often
Common causes of P0C1A
- Most likelyShort in the internal transmission wiring connector (Chrysler Pacifica Hybrid 21-008-23)
- PossibleImplausible rotor position signal from the motor B resolver
- PossibleHybrid control or inverter module software requiring an update
- Less likelyFaulty phase current sensing for motor B
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor bHybrid control module
What each part of P0C1A means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| C | Area: hybrid propulsion. |
| 1A | The exact fault in that area. |
What to do next
- Note P0C1A 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 P0C1A
What does P0C1A mean?
P0C1A means "Drive Motor B Torque Delivered Performance". P0C1A compares the torque command for motor B with the torque the motor control processor calculates as actually delivered. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C1A?
Drive gently and only to a workshop. With P0C1A the car can go into limp mode (reduced power) to protect itself.
Will P0C1A fail an emissions test?
Yes, it can. P0C1A 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 P0C1A to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 10 hours of work. This is a job for a workshop.
Will P0C1A clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.