An open circuit or high resistance in the sensor signal wire between the motor position sensor and the control module; A short to voltage on the signal circuit, often from chafed wiring near the motor or inverter; A faulty motor position sensor internal to drive motor B; Corroded or loose connector pins at the sensor or control module harness; A poor ground or reference voltage supply to the sensor causing the signal to float high; Damage to the sensor tone wheel or rotor that distorts the signal; A rare internal failure in the hybrid control module affecting the sensor input circuit

DTC codes / P0Cxx · Hybrid propulsion / P0C62

P0C62Drive Motor B Position Sensor Circuit B Circuit High

Q: What does code P0C62 mean?

Drive Motor B Position Sensor Circuit B Circuit High. P0C62 indicates that the hybrid or electric vehicle control module has detected an abnormally high voltage on the signal circuit for the position sensor that monitors drive motor B. The sensor is part of the motor's rotor position feedback system, and a high signal voltage typically means the circuit is open, shorted to power, or the sensor reference is lost, preventing the controller from accurately knowing the motor's position.

P0C62 indicates that the hybrid or electric vehicle control module has detected an abnormally high voltage on the signal circuit for the position sensor that monitors drive motor B. The sensor is part of the motor's rotor position feedback system, and a high signal voltage typically means the circuit is open, shorted to power, or the sensor reference is lost, preventing the controller from accurately knowing the motor's position.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaHybrid propulsion

Symptoms you may notice

Illumination of the check engine light or hybrid system warning lamp
Often no symptoms besides the warning light, especially if the fault is intermittent
Reduced power or a limp-home mode that limits vehicle speed
Rough operation or shuddering during acceleration or regenerative braking
The vehicle may refuse to start or shift into gear if the fault is severe
A stored code may be the only indication if the sensor signal is only momentarily high

Common causes, most likely first

An open circuit or high resistance in the sensor signal wire between the motor position sensor and the control module
A short to voltage on the signal circuit, often from chafed wiring near the motor or inverter
A faulty motor position sensor internal to drive motor B
Corroded or loose connector pins at the sensor or control module harness
A poor ground or reference voltage supply to the sensor causing the signal to float high
Damage to the sensor tone wheel or rotor that distorts the signal
A rare internal failure in the hybrid control module affecting the sensor input circuit

How to diagnose and fix it

Inspect the motor position sensor harness and connectors for chafing, corrosion, or loose pins, and repair as needed
Measure the sensor reference voltage and ground at the sensor connector to confirm they are within specification
Back-probe the signal circuit and compare its voltage to the manufacturer's expected range while rotating the motor by hand
Check for continuity and short-to-voltage on the signal wire between the sensor and control module
If the circuit tests good, remove and inspect the sensor and tone wheel for physical damage or debris
Replace the motor position sensor if it fails electrical or visual inspection
Clear the code and perform a road test to verify the repair, reprogramming the control module if required

What a high signal really means

A high signal voltage on a position sensor circuit often results from a lost ground or reference, not a failed sensor, so always verify the sensor's power and ground before condemning it.
Intermittent high-voltage codes frequently trace to a chafed wire that only shorts when the motor moves under torque, so wiggle-test the harness while monitoring live data.
Some vehicles set this code when the 12-volt auxiliary battery is weak because the control module misreads sensor signals during low-voltage cranking.
The code can be stored by a momentary glitch that never affects driveability, so a single occurrence with no symptoms may not justify parts replacement.
After replacing a sensor, some control modules require a relearn or calibration procedure, and skipping it can cause the code to return immediately.

Can I keep driving with P0C62?

If the vehicle drives normally and the light is steady, you can drive short distances to a repair shop, but avoid hard acceleration and towing. If the vehicle enters limp mode or shudders, stop driving and have it towed to prevent damage to the hybrid system.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.