Description:

This diagnostic trouble code is generated when the supply voltage (BAT) to the Transmission Control Unit (AutoPowr/IVT) exceeds 16 volts, indicating an overvoltage condition.

Reaction:

Limited or no function of the control software until the error is corrected, indicating a significant issue with the power supply.

Recommendations:

Inspect Power Supply:

• Check the battery and charging system for proper voltage regulation.
• Ensure the voltage does not exceed 16 volts.

Test Voltage Regulator:

• Verify that the voltage regulator is functioning correctly.
• Replace the voltage regulator if it is defective.

Examine Electrical Connections:

• Inspect all electrical connections related to the control unit for signs of damage or corrosion.
• Repair or replace any compromised connections.

Monitor Battery Condition:

• Ensure the battery is in good condition and properly charged.
• Replace the battery if it shows signs of overcharging or damage.

Note:

Maintaining proper voltage levels is crucial for the reliable operation of the control unit. Regular checks on the battery and charging system can help prevent overvoltage issues.