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 reading a sensor that helps it know which gear the car is in.
This code indicates that the signal from the gear selection actuator position sensor is lower than expected.
The P2E12 code is triggered when the Engine Control Module (ECM) detects a low voltage signal from the gear selection actuator position sensor circuit. This sensor is responsible for providing the ECM with information about the current position of the gear selector.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may go into limp mode
• Faulty gear selection actuator position sensor
• Wiring issues such as shorts or open circuits
• Faulty ECM or TCM (Transmission Control Module)
ECM: Engine Control Module
TCM: Transmission Control Module
• Inspect the wiring and connectors for damage or corrosion.
• Test the gear selection actuator position sensor for proper operation.
• Check the ECM or TCM for faults.
• Repair or replace damaged wiring or connectors.
• Replace the gear selection actuator position sensor if faulty.
• Reprogram or replace the ECM or TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regularly inspect and maintain transmission components.
• Ensure proper electrical connections.
• Avoid harsh driving conditions.
Sensor Issue
• Do not ignore the check engine light.
• Have the vehicle inspected by a professional mechanic.
Check vehicle warranty for coverage on transmission components.
This code has been associated with sensor issues in various automatic transmission systems.
Moderate – Should be addressed soon to avoid potential transmission damage.
Driving with transmission issues can be unsafe and may lead to further damage.
• Engine running
• Transmission in gear
The gear selection actuator position sensor is typically located on or near the transmission.
Q: Can I drive with a P2E12 code?
A: It's not recommended to drive for long periods with this code, as it may cause further transmission issues.
Q: How do I reset the P2E12 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed first.
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