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, like when you can't find the right spot to park your bike.
The transmission control module (TCM) has not properly learned the neutral position of the transmission.
The P086F code indicates that the transmission control module (TCM) has detected that the neutral position sensor has not been learned or calibrated correctly. This sensor is crucial for determining the neutral position of the transmission, which is essential for smooth gear shifting and transmission operation.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may not start or move
• Faulty neutral position sensor
• Wiring issues or poor connections
• Faulty transmission control module (TCM)
Transmission Control Module (TCM): A component that controls the transmission functions in a vehicle.
Neutral Position Sensor: A sensor that detects the neutral gear position in the transmission.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors of the neutral position sensor.
• Test the neutral position sensor for proper operation.
• Replace or repair the neutral position sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance of the transmission system
• Ensure proper installation of sensors
• Avoid harsh driving conditions
Sensor Issue
• Avoid driving the vehicle until repaired.
• Consult a professional mechanic for diagnosis.
Check with your vehicle manufacturer for specific warranty coverage on transmission components.
This code has been associated with issues in vehicles with automatic transmissions, particularly in models with electronic control systems.
High – This issue can lead to transmission failure if not addressed promptly.
Driving with transmission issues can be dangerous and may lead to further damage. Ensure repairs are conducted by a qualified professional.
• Vehicle in neutral position
• Engine running
The neutral position sensor is typically located on the transmission housing.
Q: Can I drive with a P086F code?
A: It's not recommended to drive with this code as it can lead to further transmission damage.
Q: How do I reset the neutral position sensor?
A: Resetting typically requires a professional scan tool to recalibrate the sensor.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.