P1620
Low Engine Coolant Circuit Conditions
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–33 (est.)
Symptoms
- Check Engine Light Is On
- Low coolant warning on instrument panel
- Possible engine overheating
- Unstable engine temperature readings
- False alarms of the cooling system
Causes
- Low coolant level
- Coolant level sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Problems with the engine control unit
How to Fix
- Check the coolant level and add if necessary
- Inspect the coolant level sensor for damage
- Check the integrity of the wiring and connectors
- Test the coolant level sensor
- Check error codes in the engine control unit