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 reading a sensor that tells it when the car is in neutral. It's like if your video game controller couldn't tell if you were pressing a button or not.
The P086C code is triggered when the transmission control module (TCM) detects a low voltage signal from the neutral position sensor A circuit.
The neutral position sensor is responsible for informing the TCM about the gear position of the transmission. A 'circuit low' condition indicates that the voltage in the sensor's circuit is below the expected range, which could be due to wiring issues, a faulty sensor, or a problem with the TCM.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may not start or may start in gear
• Faulty neutral position sensor
• Damaged or corroded wiring/connectors
• Transmission Control Module (TCM) malfunction
Transmission Control Module (TCM): A computer that controls the transmission functions.
OBD-II: On-Board Diagnostics, a standardized system for vehicle diagnostics.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the neutral position sensor for proper operation.
• Replace the faulty neutral position sensor.
• Repair or replace damaged wiring/connectors.
• Reprogram or replace the TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain wiring and connectors.
• Ensure the transmission is serviced according to the manufacturer's schedule.
• Avoid harsh driving conditions that may stress the transmission.
Sensor Issue
• Do not ignore the Check Engine Light.
• Get the vehicle diagnosed by a professional if unsure.
• Avoid driving the vehicle if it behaves erratically.
Check with your vehicle manufacturer for warranty coverage on the transmission and related components.
The P086C code has been reported in vehicles with electronic transmission systems, often related to sensor or wiring issues.
Moderate – While the vehicle may still operate, ignoring the issue could lead to more severe transmission problems.
Driving with a malfunctioning transmission sensor can be dangerous. Address the issue promptly to ensure vehicle safety.
• Vehicle must be in a safe, stationary position.
• Ensure the vehicle is in neutral to test the sensor accurately.
The neutral position sensor is typically located on the transmission or gear selector assembly.
Q: Can I drive with a P086C code?
A: It's not recommended to drive with this code, as it may cause transmission issues.
Q: How do I clear the P086C code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is resolved first.
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