Drive Motor Position Sensor Circuit Intermittent/Erratic
The P0C59 code indicates an intermittent or erratic signal from the drive motor position sensor circuit in a hybrid or electric vehicle. This sensor monitors the rotor position of the electric drive motor, which is critical for 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 misalignment, or a failing sensor.
1. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced motor power or limp mode
- Jerking or hesitation during acceleration
- Vehicle may stall or fail to start
2. Most Common Causes
- Faulty drive motor position sensor
- Damaged or corroded wiring/connectors in the sensor circuit
- Sensor misalignment or air gap issues
- Intermittent short or open circuit due to vibration or heat
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data to identify conditions when fault occurred.
Step 2: Visually inspect the sensor connector and wiring for damage, corrosion, or loose connections.
Step 3: Use a multimeter to test sensor resistance and signal voltage per manufacturer specs.
Step 4: Check sensor alignment and air gap; adjust or replace if necessary.
Step 5: If wiring and sensor pass tests, suspect intermittent internal fault; replace sensor.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe. The intermittent signal can cause sudden loss of motor power or unexpected stalling, leading to a crash. Have the vehicle towed to a repair shop.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts (sensor $50-$200) and labor (1-2 hours at $100-$150/hr).
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.