P2557

Engine Coolant Level Sensor/Switch Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–28 (est.)

Symptoms

Check engine light is on
Incorrect coolant level readings on the dashboard
False low coolant warnings
Engine overheating due to lack of warning
Floating coolant level readings

Causes

Coolant level sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Sensor contact corrosion
Engine control unit malfunction

How to Fix

Check the coolant level in the reservoir
Inspect the level sensor and its connector for damage
Check the continuity of the sensor circuit using a multimeter
Replace the coolant level sensor if necessary
Clean the sensor connector contacts from corrosion.

Related codes

P2556 P2558 P2559