Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car's computer is saying that the power going to the part that helps change gears is too low. It's like trying to use a toy with weak batteries.
The power supply to the gear shift control module is below the expected voltage range.
The P273C code indicates that the transmission control module (TCM) has detected a low voltage condition in the supply circuit for Gear Shift Control Module A. This module is responsible for controlling the gear shifts in the transmission. A low voltage condition can impair its ability to function correctly.
• Transmission may not shift properly
• Check Engine Light illuminated
• Vehicle may go into limp mode
• Faulty gear shift control module
• Wiring issues such as shorts or open circuits
• Weak or failing battery
TCM: Transmission Control Module
Limp Mode: A safety feature that limits vehicle performance to prevent damage
• Check battery voltage and charging system
• Inspect wiring and connectors to the gear shift control module
• Test the gear shift control module for faults
• Repair or replace damaged wiring
• Replace the gear shift control module if faulty
• Ensure battery and charging system are functioning properly
• Multimeter
• OBD-II scanner
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check battery health
• Inspect wiring for damage
• Ensure proper maintenance of the transmission system
Electrical Issue
• Avoid driving the vehicle if it is not shifting properly
• Consult a professional mechanic for diagnosis
Check with the vehicle manufacturer for specific warranty coverage on transmission components.
This code has been associated with electrical issues in the gear shift control circuit, commonly reported in vehicles with high mileage or poor maintenance.
Moderate – It should be addressed soon to prevent further transmission issues.
Driving with transmission issues can be dangerous. Ensure the vehicle is safe to operate.
• Vehicle must be in a safe, stationary position
• Battery must be fully charged
The gear shift control module is typically located near the transmission or integrated into the transmission control module.
Q: Can I drive with a P273C code?
A: It's not recommended to drive with this code, as it can lead to transmission problems.
Q: Will clearing the code fix the problem?
A: Clearing the code may temporarily turn off the Check Engine Light, but it won't fix the underlying issue.
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