00129low
Check Engine Coolant Sensor
engine
Description
The engine coolant temperature sensor may be faulty.
Activation Conditions
Coolant temperature sensor reading is out of expected range or not responding.
Unit Behavior
Alarm only (unit continues to operate).
Reset Conditions
Auto reset when sensor reads normally.
Corrective Actions
1. Check the engine coolant temperature sensor. 2. Check the sensor wiring and connectors. 3. Verify coolant temperature manually if possible.