The second coolant temperature sensor, usually in the radiator outlet, is reading implausibly. Often accompanies thermostat faults.
P2183 — also written P2183, P 2183, 2183 — is the OBD-II code for engine coolant temperature sensor 2 circuit range/performance. Same code, same fix: this page covers every spelling of it.
P2183 is a sensors fault code, typically costing £80–£400 to put right in a UK garage.
What causes P2183?
- Failed second ECT sensor
- Stuck thermostat
- Air lock in the cooling system
- Wiring fault
How P2183 is fixed
- Compare both coolant sensors on live data
- Bleed the cooling system properly
- Replace the thermostat or sensor
P2183 repair cost in the UK
Most P2183 repairs land between £80–£400 including parts and labour. The spread is wide because the cheap fix (a sensor, a hose, a leak) and the expensive fix (a major component) throw the same code — which is why a proper diagnosis before parts are bought saves the most money.
Can you drive with P2183?
Yes, but keep an eye on the temperature gauge.
Urgency: medium.