Drive Motor Position Sensor Circuit Intermittent/Erratic
The P0C5E code indicates an intermittent or erratic signal from the drive motor position sensor circuit in a hybrid or electric vehicle. This sensor is critical for the powertrain control module (PCM) to determine the rotor position of the electric motor, enabling proper motor control and torque delivery. An intermittent fault can cause sudden loss of power, jerking, or stalling, and may be triggered by wiring issues, connector corrosion, sensor damage, or electromagnetic interference.
01. Most Common Causes
- Faulty drive motor position sensor
- Damaged or corroded wiring/connectors in the sensor circuit
- Loose or intermittent electrical connections
- Electromagnetic interference from nearby components
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced motor power or hesitation during acceleration
- Jerking or surging while driving
- Vehicle may enter limp mode or stall
- Intermittent loss of electric drive
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data to capture conditions when fault occurred.
Step 2: Visually inspect the drive motor position sensor and its wiring harness for damage, corrosion, or loose connections.
Step 3: Use a multimeter to test sensor supply voltage (typically 5V) and ground continuity.
Step 4: Monitor sensor signal voltage with a scan tool while gently wiggling the wiring harness to reproduce the intermittent fault.
Step 5: If wiring is intact, test sensor resistance and compare to manufacturer specifications; replace if out of range.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. The intermittent nature can cause sudden loss of power or stalling, which is dangerous, especially at highway speeds. Have the vehicle diagnosed and repaired promptly.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Sensor replacement parts range from $100-$300, plus labor (1-2 hours). Total cost can be $200-$500 depending on vehicle and shop rates.