• Check Engine Light is on
• Inability to switch to manual mode
• Erratic shifting
• Faulty shift lever assembly
• Short circuit in the wiring
• Defective transmission control module (TCM)
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics II
• P0957
• P0959
Auto Shift Manual Mode Circuit High
This code means there's a problem with the car's computer that helps you switch gears manually. It's like the car's brain is getting too much information when you try to change gears yourself.
The P0958 code indicates that the transmission control module (TCM) is detecting a high voltage 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 function. If it detects a voltage level higher than the expected range, it triggers the P0958 code.
• Check for any other related codes and clear them.
• Inspect the wiring and connectors for damage or short circuits.
• 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
• Toyota Camry
• Honda Accord
• Ford Fusion
• Regularly inspect the transmission wiring.
• Avoid harsh driving conditions.
• Perform routine transmission maintenance.
Transmission Control
• Avoid using manual mode until the issue is resolved.
• Consult with a professional mechanic for accurate diagnosis.
Check with your dealer if the transmission components are still under warranty.
This code has been associated with issues in vehicles with manual shift mode, particularly in models with electronic shift controls.
Moderate – While the vehicle may still operate, manual shifting issues can lead to further transmission problems if not addressed.
Driving with unresolved transmission issues can lead to unsafe driving conditions. Address the issue promptly.
• Vehicle in park with engine running.
• Attempt to engage manual shift mode.
The shift lever assembly is typically located on the center console or steering column, depending on the vehicle model.
Q: Can I drive my car with a P0958 code?
A: It's possible, but you may experience shifting issues. It's best to have it checked by a mechanic.
Q: Will fixing this code improve my car's performance?
A: Yes, resolving the issue can restore proper shifting and improve overall driving experience.
