Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is getting a signal from the motor position sensor that's higher than it should be. It's like when your thermometer says it's 200 degrees outside when it's really only 80 degrees.
The drive motor position sensor is sending a signal to the vehicle's computer that is outside the expected range, indicating a potential issue with the sensor or its circuit.
The P1C12 code is triggered when the Powertrain Control Module (PCM) detects a signal from the drive motor 'A' position sensor that is higher than the expected range. This could indicate a problem with the sensor itself, a wiring issue, or a fault in the PCM.
• Check Engine Light is on
• Reduced engine performance
• Unusual motor behavior
• Faulty drive motor position sensor
• Wiring issues such as open or short circuits
• Faulty PCM
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 related to the drive motor position sensor.
• Test the drive motor position sensor for proper operation.
• Replace the drive motor position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Volt
• Toyota Prius
• Nissan Leaf
• Regular maintenance checks
• Ensure wiring is intact and free of corrosion
• Update vehicle software as needed
Sensor Issue
• Do not ignore the Check Engine Light.
• Have a professional diagnose the issue if you are unsure.
• Regularly check for software updates for your vehicle.
Check with your vehicle manufacturer; sensors may be covered under powertrain warranty.
This code has been associated with hybrid and electric vehicles, where precise motor control is critical.
Moderate – It should be addressed soon to avoid potential driveability issues.
Ignoring this issue could lead to reduced vehicle performance and efficiency.
• Vehicle at operating temperature
• Drive motor engaged
Typically located near the drive motor or integrated within the motor assembly.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced vehicle performance and potential damage to the drive motor.
Q: Can I drive with this code?
A: It's possible to drive, but it's not recommended as it may lead to further issues.
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