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 there's a problem with the car's system that lets you manually shift gears. It's like when a video game controller button isn't working right.
The P0957 code indicates that the transmission control module (TCM) has detected a low voltage or resistance issue in the auto shift manual mode circuit.
The auto shift manual mode allows the driver to manually select gears in an automatic transmission. The TCM monitors the circuit responsible for this mode, and if it detects a voltage or resistance lower than expected, it triggers the P0957 code. This could be due to wiring issues, a faulty switch, or problems within the TCM itself.
• Check Engine Light is on
• Inability to manually shift gears
• Transmission stuck in one gear
• Faulty shift lever assembly
• Damaged wiring or connectors in the shift circuit
• Malfunctioning transmission control module (TCM)
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the shift lever assembly for proper function.
• Repair or replace damaged wiring or connectors.
• Replace the faulty shift lever assembly.
• Reprogram or replace the TCM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Honda Accord
• Toyota Camry
• Ford Fusion
• Regularly inspect wiring for wear and tear.
• Ensure connectors are clean and secure.
• Avoid forcing the gear shift lever.
Transmission Control Issue
• Avoid driving in manual mode until the issue is fixed.
• Consult a professional mechanic for diagnosis.
Check with your vehicle manufacturer for specific warranty coverage on transmission components.
This code is typically associated with vehicles that have electronic gear shift systems and is more common in models with higher mileage.
Moderate – Should be addressed soon to avoid potential transmission damage.
Driving with a malfunctioning transmission can be unsafe and may lead to further damage to the vehicle.
• Vehicle parked with engine running
• Attempt to engage manual shift mode
The shift lever assembly is located in the center console of the vehicle.
Q: Can I drive my car with the P0957 code?
A: It's possible to drive, but it's not recommended as it may cause further transmission issues.
Q: How can I reset the P0957 code?
A: You can clear the code with an OBD-II scanner, but the issue may reoccur if not properly fixed.
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