P0C1A: 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. 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.

Symptoms

• Malfunction indicator lamp
• Vehicle in limp mode with reduced propulsion
• Hybrid system warning, engine runs more often

Most likely causes

• Short in the internal transmission wiring connector (Chrysler Pacifica Hybrid 21-008-23)
• Implausible rotor position signal from the motor B resolver
• Hybrid control or inverter module software requiring an update
• Faulty phase current sensing for motor B

What to check, in order

Start with the simplest. You can tick off each step.

1. Read the codes with a hybrid-compatible scanner and write down the freeze frame data
2. Compare the reading with other engine data while varying the engine speed.
3. Make sure the battery cooling air intake is clean
4. Check the 12 V auxiliary battery, which can also trigger warnings
5. Leave any high-voltage measurements to a specialized repair shop

Good to know

• It can trigger limp mode.
• It affects emissions.

What each character of P0C1A means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• C: Subsystem depends on the code range
• 1A: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0C1A?

If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

What causes code P0C1A?

The most common causes are: short in the internal transmission wiring connector (Chrysler Pacifica Hybrid 21-008-23); implausible rotor position signal from the motor B resolver; hybrid control or inverter module software requiring an update.

Related codes

• P0C19Drive Motor A Torque Delivered Performance
• P0A1CDrive Motor B Control Module Performance
• P0A79Drive Motor B Inverter Performance
• P0A45Drive Motor B Position Sensor Circuit
• P0BF2Drive Motor B Phase U Current Sensor Circuit Range/Performance

Sources

• gsi.ext.gm.com: 16OBDG01 Hybrid Diagnostics
• gsi.ext.gm.com: 18OBDG02 Hybrid Diagnostics
• gsi.ext.gm.com: 12OBDG06 Hybrid Diagnostics
• static.nhtsa.gov: MC 10236905 9999

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.