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 doesn't know where the 'neutral' gear is because it hasn't learned it yet.
The vehicle's transmission control module (TCM) has not successfully learned the neutral position of the transmission.
The P181E code indicates that the TCM has not been able to calibrate or learn the correct position of the neutral gear. This process is crucial for the proper operation of the transmission, as it ensures that the vehicle can correctly identify when it is in neutral.
• Check Engine Light is on
• Transmission may not shift correctly
• Vehicle may not start
• Faulty neutral position sensor
• Transmission control module (TCM) software issue
• Wiring or connector problems in the sensor circuit
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Check for other related codes
• Inspect the neutral position sensor and its wiring
• Perform a TCM software update if available
• Replace the neutral position sensor
• Repair or replace damaged wiring/connectors
• Reprogram or update the TCM
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Chevrolet Malibu
• Buick Regal
• GMC Terrain
• Regular maintenance checks
• Ensure TCM software is up-to-date
• Inspect wiring and connectors periodically
Sensor Issue
• Avoid driving the vehicle until repaired
• Consult a professional mechanic for diagnosis
Check with the vehicle manufacturer for warranty coverage on transmission components.
This code has been reported in vehicles with automatic transmissions, particularly those with electronic control systems.
Moderate – It's important to address this issue to prevent further transmission problems.
Driving with transmission issues can be unsafe. It is recommended to have the vehicle inspected and repaired by a qualified technician.
• Vehicle on a flat surface
• Transmission in neutral
The neutral position sensor is typically located on or near the transmission housing.
Q: Can I drive with a P181E code?
A: It's not recommended as it may lead to further transmission issues.
Q: How do I reset the P181E code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is resolved first.
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