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 part of the car that lets you switch gears manually when you're driving an automatic car. It's like when a button on a toy doesn't work right.
The P0955 code is triggered when the transmission control module (TCM) detects a problem in the circuit that controls the manual shift mode in an automatic transmission.
The auto shift manual mode circuit is responsible for allowing the driver to manually select gears in an automatic transmission. This circuit includes the shift lever, sensors, and wiring that communicate with the TCM. If the TCM detects an electrical fault or irregularity within this circuit, it will set the P0955 code.
• Check Engine Light is on
• Manual shift mode does not work
• Transmission stuck in one gear
• Faulty shift lever
• Damaged wiring or connectors
• Defective transmission control module (TCM)
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the shift lever and its connections for damage.
• Check the wiring and connectors for continuity and damage.
• Replace or repair the shift lever if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the TCM if it is defective.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $600
Moderate
• Toyota Camry
• Honda Accord
• Nissan Altima
• Regularly inspect transmission components.
• Avoid aggressive shifting.
• Keep the transmission fluid clean and at the proper level.
Transmission Control Circuit Issue
• Avoid using manual mode until the issue is fixed.
• Have the vehicle inspected by a professional mechanic.
Transmission components may be covered under the powertrain warranty. Check with the manufacturer.
This code has been reported in vehicles with electronic automatic transmissions, particularly those with manual shift modes.
Moderate – It affects drivability and should be addressed soon.
Driving with a malfunctioning transmission can be unsafe and may lead to further damage.
• Vehicle in park with the engine running.
• Attempt to engage manual shift mode.
The shift lever is typically located in the center console between the driver and passenger seats.
Q: Can I drive with the P0955 code?
A: It's possible to drive, but manual shift mode may not work. It's best to get it fixed soon.
Q: Will fixing this code improve my car's performance?
A: Yes, resolving this issue can restore manual shifting capability and improve overall transmission performance.
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