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 having trouble talking to the part that checks if the car is in neutral. It's like when your game console can't find the controller.
The P086A code is triggered when the transmission control module (TCM) detects an issue with the circuit of the neutral position sensor, which helps determine if the transmission is in the neutral position.
The neutral position sensor is responsible for sending signals to the TCM indicating the transmission's position. An 'open' circuit means there is a break in the electrical pathway, preventing the sensor from communicating properly with the TCM.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may not start
• Faulty neutral position sensor
• Damaged wiring or connectors
• Faulty transmission control module
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the neutral position sensor for proper operation.
• Replace the neutral position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the transmission control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect wiring for wear and tear.
• Ensure proper maintenance of the transmission system.
• Avoid harsh driving conditions that may damage components.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved.
• Consult a professional mechanic for accurate diagnosis.
• Regularly maintain the vehicle to prevent future issues.
Check with your vehicle manufacturer for warranty coverage on transmission components.
This code has been associated with issues in vehicles with automatic transmissions, particularly in models with electronic shift controls.
Moderate – It should be addressed soon to prevent potential transmission damage.
Driving with a faulty neutral position sensor can lead to transmission issues and may violate emissions regulations.
• Vehicle in neutral position
• Engine running
The neutral position sensor is typically located on the transmission housing.
Q: Can I drive with a P086A code?
A: It's not recommended as it may cause transmission issues.
Q: How do I clear a P086A code?
A: Fix the issue and then use an OBD-II scanner to clear the code.
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