p2181
Moderate
SEAT · SUVs & Crossovers
Coolant Temperature Regulation Malfunction
Quick Answer
Error code P2181 on your SEAT SUVs & Crossovers means: Coolant Temperature Regulation Malfunction. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Check the engine coolant level and top up if necessary
2
Monitor ECT sensor readings and compare to engine operating temperature
3
Test the thermostat by observing coolant circulation at idle versus loaded
4
Inspect for coolant leaks around the thermostat housing
5
Replace the thermostat if it remains stuck open or closed
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Thermostat assembly
Engine coolant temperature sensor
Thermostat housing gasket
Engine coolant
Related Error Codes