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 having trouble understanding where the gear shift motor is because the sensor is giving confusing signals.
The shift motor position sensor is supposed to tell the car's computer the exact position of the shift motor. If the sensor's readings are outside the expected range, it can cause this error code.
The P28EC code indicates that the shift motor position sensor has reported values that exceed the predefined learning limits set by the vehicle's control module. This may be due to sensor malfunction, wiring issues, or a problem with the shift motor itself.
• Check engine light is on
• Erratic shifting behavior
• Transmission stuck in one gear
• Faulty shift motor position sensor
• Wiring issues or poor connections
• Malfunctioning shift motor
Shift Motor: A component that helps change gears in a vehicle's transmission.
Position Sensor: A device that detects the position of a component and sends this information to the vehicle's computer.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the shift motor position sensor.
• Test the shift motor position sensor for proper operation.
• Replace the faulty shift motor position sensor.
• Repair or replace damaged wiring or connections.
• Replace the shift motor if it is malfunctioning.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regularly inspect wiring and connectors.
• Perform routine maintenance on the transmission.
• Address any unusual shifting issues promptly.
Sensor Issue
• Avoid driving the vehicle until the issue is fixed to prevent further damage.
• Consult with a professional mechanic for accurate diagnosis.
Check with your vehicle manufacturer for warranty coverage on transmission components.
This code has been associated with certain models that have a known issue with shift motor sensors.
Moderate – It is recommended to address this issue soon to avoid potential transmission damage.
Driving with transmission issues can be unsafe and may lead to further vehicle damage.
• Vehicle at operating temperature
• Transmission in neutral or park
The shift motor position sensor is typically located on the transmission housing.
Q: Can I drive with the P28EC code?
A: It's not recommended as it may lead to further transmission damage.
Q: How can I reset the P28EC code?
A: After repairs, use an OBD-II scanner to clear the code from the vehicle's computer.
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