Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is getting confusing information from a sensor that tells it how the electric motor is positioned. It's like when you can't tell if a clock hand is pointing at 12 or 1.
The vehicle's control system has detected that the phase angle reading from the drive motor 'A' position sensor is not making sense or is outside expected parameters.
The P1C14 code is triggered when the powertrain control module (PCM) receives an implausible signal from the drive motor 'A' position sensor. This sensor is responsible for providing the PCM with the exact position of the drive motor's rotor. An implausible signal may indicate a malfunction in the sensor or a discrepancy in the motor's phase angle reading.
• Check Engine Light illuminated
• Reduced vehicle performance
• Unusual noises from the electric motor
• Faulty drive motor 'A' position sensor
• Wiring issues such as shorts or open circuits
• Faulty PCM or software issues
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the drive motor 'A' position sensor for proper operation.
• Replace the faulty drive motor 'A' position sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Chevrolet Volt
• Toyota Prius
• Nissan Leaf
• Regular maintenance and inspection of electrical systems
• Ensure proper software updates are applied
• Avoid exposure to extreme conditions that may damage sensors
Sensor Issue
• Do not ignore the Check Engine Light; get the vehicle checked promptly.
• Avoid driving the vehicle aggressively until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on powertrain components.
This code is more common in hybrid and electric vehicles due to the complexity of their drive systems.
Moderate – While the vehicle may still operate, performance may be compromised, and further damage could occur.
Driving with a malfunctioning motor position sensor can lead to reduced performance and potential safety risks.
• Vehicle must be at operating temperature.
• Ensure the battery is fully charged.
The drive motor 'A' position sensor is typically located near the electric motor, often integrated into the motor housing.
Q: Can I drive my car with a P1C14 code?
A: It's not recommended as it may affect vehicle performance and lead to further damage.
Q: How do I reset the P1C14 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, the code should not return.
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