Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the switch that helps the car change gears up and down. It's like when a light switch doesn't work right, so the light doesn't turn on or off properly.
The P085F code is triggered when the transmission control module (TCM) detects a problem with the circuit that controls the up and down shift switch. This switch is responsible for sending signals to the TCM to change gears.
The P085F code indicates that the TCM has detected a range or performance issue in the up and down shift switch circuit. This could be due to electrical issues such as a short or open circuit, or a mechanical issue with the switch itself.
• Check Engine Light is on
• Difficulty in shifting gears
• Transmission stuck in one gear
• Faulty up and down shift switch
• Wiring issues such as shorts or open circuits
• Faulty transmission control module (TCM)
Transmission Control Module (TCM): A computer that controls the operation of a vehicle's transmission.
OBD-II Scanner: A device used to read and clear diagnostic trouble codes from a vehicle's onboard computer.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage
• Test the up and down shift switch for proper operation
• Replace the faulty up and down shift switch
• Repair or replace damaged wiring or connectors
• Reprogram or replace the transmission control module (if necessary)
• OBD-II scanner
• Multimeter
• Screwdriver set
$100 - $500
Moderate
• Toyota Camry
• Honda Accord
• Ford Focus
• Regularly inspect and maintain transmission components
• Avoid harsh driving conditions that can stress the transmission
• Ensure proper electrical connections are maintained
Sensor Issue
• Have the vehicle inspected by a professional mechanic
• Avoid driving the vehicle until the issue is resolved to prevent further damage
Check with the vehicle manufacturer for specific warranty coverage on transmission components.
The P085F code is relatively uncommon and typically associated with newer vehicles equipped with advanced transmission systems.
Moderate – It is advisable to address this issue promptly to avoid potential transmission damage.
Driving with a malfunctioning transmission can be dangerous. Ensure repairs are conducted by a qualified professional.
• Vehicle must be in operation
• Transmission must be engaged
The up and down shift switch is typically located on the transmission or near the gear shifter.
Q: Can I drive with a P085F code?
A: It's not recommended to drive with this code active, as it may lead to further transmission damage.
Q: How do I reset the P085F code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
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