Drive Motor Position Sensor Circuit Low
The P0C61 code indicates that the drive motor position sensor circuit is reporting a voltage lower than the expected range. This sensor is critical for the hybrid/electric vehicle's powertrain control module (PCM) to determine the rotor position for precise motor control. A low signal can result from a faulty sensor, damaged wiring, poor electrical connections, or issues with the PCM itself. This condition can lead to improper motor operation, reduced performance, and potential safety concerns.
01. Most Common Causes
- Faulty drive motor position sensor
- Damaged or corroded wiring/connectors in the sensor circuit
- Short to ground in the sensor signal circuit
- Faulty powertrain control module (PCM)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced motor power or performance
- Vehicle may enter limp mode
- Unusual motor noises or vibration
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve all codes and freeze frame data.
Step 2: Visually inspect the drive motor position sensor and its wiring for damage, corrosion, or loose connections.
Step 3: Measure the sensor reference voltage (typically 5V) and ground at the sensor connector.
Step 4: Test the sensor signal output voltage while rotating the motor manually (if possible) and compare to specifications.
Step 5: If sensor and wiring are okay, check for PCM issues or perform a PCM software update.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. The vehicle may experience reduced power or unexpected behavior, which could be dangerous, especially in traffic.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and sensor replacement, but can be higher if PCM replacement is needed.