TSC 000168.03 – Control Unit, Supply Voltage Too High
TSC 000168.03 (TSC 168.03)
Code: 000168.03
Shortcode: 168.03
Description:
This diagnostic trouble code, TSC 000168.03, is triggered when the control unit detects a supply voltage (battery) exceeding 16 volts. High supply voltage can occur due to issues with the charging system or battery.
Reaction:
When this error occurs, the control unit may protect itself by shutting down or entering a safe mode to prevent damage from the high voltage.
Recommendations:
Inspect Battery and Charging System:
- Check Battery Voltage:
- Measure the battery voltage to ensure it is within the normal operating range (usually between 12.6 and 14.4 volts when the engine is running).
- Replace the battery if it is faulty or overcharging.
- Check Alternator and Voltage Regulator:
- Inspect the alternator and voltage regulator for proper operation.
- Replace any components that are causing overcharging.
Ensure Proper Electrical Connections:
- Check Wiring and Connectors:
- Inspect all electrical connections between the battery, alternator, and control unit for damage or corrosion.
- Repair or replace faulty wiring and connectors.
Note:
Maintaining the charging system and ensuring all electrical components are functioning correctly can prevent high voltage conditions. Regularly monitor battery health and alternator performance to avoid such issues.