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 is critical for the powertrain control module (PCM) to determine the rotor position and speed of the electric drive motor. An erratic signal can cause improper motor control, leading to reduced performance, unexpected shutdowns, or safety hazards. Common causes include a faulty sensor, damaged wiring, poor electrical connections, or issues with the motor control module.
01. Most Common Causes
- Faulty drive motor position sensor
- Damaged or corroded wiring/connectors in the sensor circuit
- Intermittent electrical connection due to vibration or thermal expansion
- Faulty motor control module (inverter/controller)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced motor power or loss of propulsion
- Vehicle may enter limp mode or shut down unexpectedly
- Hesitation or jerking during acceleration
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data to confirm P0C59.
Step 2: Visually inspect the sensor wiring and connectors for damage, corrosion, or loose pins.
Step 3: Use a multimeter to test sensor circuit continuity and resistance per manufacturer specs.
Step 4: If wiring is intact, replace the drive motor position sensor and clear codes.
Step 5: If problem persists, test the motor control module and replace if necessary.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe. The vehicle may lose propulsion unexpectedly, increasing the risk of an accident. Have it diagnosed and repaired immediately.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts and labor. Sensor replacement is often around $200-$300, while module replacement can exceed $1000.