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 change gears in a car. It's like when a button on your game controller doesn't work right.
The P0815 code indicates a malfunction in the circuit that controls the upshift switch, which is part of the transmission system.
The upshift switch is responsible for signaling the transmission control module (TCM) to change to a higher gear. A fault in this circuit can prevent the transmission from shifting properly, leading to performance issues.
• Transmission not shifting to higher gears
• Check Engine Light is on
• Poor acceleration
• Faulty upshift switch
• Damaged wiring or connectors in the upshift circuit
• Faulty transmission control module (TCM)
Upshift: Changing to a higher gear in a vehicle's transmission.
Transmission Control Module (TCM): A component that manages the operation of a vehicle's transmission.
• Inspect the upshift switch for damage or wear.
• Check the wiring and connectors for any signs of damage or corrosion.
• Test the transmission control module for proper operation.
• Replace the faulty upshift switch.
• Repair or replace damaged wiring or connectors.
• Replace the transmission control module if necessary.
• Multimeter
• OBD-II scanner
• Screwdriver set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect transmission components.
• Keep electrical connections clean and free of corrosion.
• Follow the vehicle's maintenance schedule.
Transmission Control System
• Avoid driving at high speeds until the issue is fixed.
• Consult a professional mechanic for a thorough diagnosis.
Check if the vehicle's transmission system is covered under warranty for repairs.
The P0815 code has been associated with vehicles experiencing shifting issues due to electrical faults in the transmission system.
Moderate – This issue can affect vehicle performance and should be addressed promptly to avoid further damage.
Driving with a malfunctioning transmission can be unsafe. Address this issue as soon as possible to ensure vehicle safety.
• Vehicle at operating temperature
• Transmission in drive mode
The upshift switch is typically located on the gear shifter or within the transmission housing.
Q: Can I drive with a P0815 code?
A: It's not recommended to drive with this code as it can affect the vehicle's ability to shift gears properly.
Q: How can I reset the P0815 code?
A: You can reset the code using an OBD-II scanner, but it's important to fix the underlying issue first.
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