Damaged, chipped or corroded wiring or connector for the motor position sensor (resolver or encoder) circuit; Faulty motor position sensor (resolver or encoder) or its signal degrading with heat or vibration; Sensor misaligned, loose or incorrectly fitted after motor or transmission work; Electrical interference from damaged shielding or poor earthing on the sensor signal wiring; Fault inside the motor control unit or inverter that processes the position signal; Mechanical damage to the drive motor rotor or shaft affecting the sensor reading.

P0C60

Drive Motor B Position Sensor Circuit B Range/Performance.

Generic
Powertrain
Generic code
High severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
C: AreaHybrid propulsion
60: FaultThe specific fault in that area

What it means

P0C60 is a generic powertrain code for hybrid and electric vehicles. It means the control unit has judged the signal from the position sensor for drive motor B, circuit B, to be out of range or implausible compared with what it expects. The motor control unit typically compares the rotor position signal with motor speed, current and the other position sensor channel, and sets the code when they disagree.

Symptoms

Hybrid or EV system warning light on the dashboard
Reduced power or limp mode
Rough, jerky or hesitant drive-away
Vehicle fails to enter Ready mode or shuts down while driving
Engine starts more often than normal or the electric assist is reduced
Unusual whine or vibration from the drive motor

Possible causes

Damaged, chipped or corroded wiring or connector for the motor position sensor (resolver or encoder) circuitlikely
Faulty motor position sensor (resolver or encoder) or its signal degrading with heat or vibrationlikely
Sensor misaligned, loose or incorrectly fitted after motor or transmission workpossible
Electrical interference from damaged shielding or poor earthing on the sensor signal wiringpossible
Fault inside the motor control unit or inverter that processes the position signalrare
Mechanical damage to the drive motor rotor or shaft affecting the sensor readingrare

How to diagnose

Read all stored and pending codes and note any other drive motor, inverter or high voltage codes, as they help narrow down the fault
Review freeze frame data for motor speed, torque request, temperature and vehicle state when the code set
Check for relevant technical service bulletins and software updates for the specific model, as the procedure varies by make and motor layout
Visually inspect the position sensor wiring, connector pins and shielding for damage, water ingress, corrosion or rubbing, following the manufacturer's high voltage safety procedure
Wiggle test the harness with live data on screen to see if the position signal drops out or jumps
Measure sensor circuit resistance, supply and signal values against manufacturer specifications, with the high voltage system isolated as required
Check the live rotor position and motor speed data for plausibility against the other position sensor channel
Check sensor mounting and alignment, and inspect for signs of mechanical damage to the motor

How to fix

Repair or replace damaged wiring, terminals or connectors in the position sensor circuit
Replace the faulty position sensor or resolver assembly and carry out any required alignment or learning procedure
Refit or correct the sensor mounting and re-run the manufacturer's calibration or relearn if specified
Restore damaged shielding or earth connections on the signal wiring
Replace or reprogram the motor control unit or inverter only after the wiring and sensor are proven good, and if a known fault or outdated calibration applies
Repair or replace the drive motor if mechanical damage is confirmed

Can I keep driving?

High severity

Limit driving, as the car may lose drive power or shut down without warning, which is unsafe in traffic. Have it checked promptly by a technician trained in high voltage systems, and do not attempt work on the high voltage system yourself.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.