P0EF3 — Drive Motor C Temperature Sensor Circuit Range/Performance
The ECM detects a range/performance fault on the drive motor c temperature sensor circuit. Reading cannot be used reliably for control.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Drive motor c temp sensor
- Wiring harness
- Hybrid control module
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Sensor characteristic drifted
- Sensor mounting displaced
- Sensor element aged beyond calibration window
Possible symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
Related codes
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.