Coolant Temperature Sensor At Radiator Outlet Signal High
Table of contents
P2185 BMW Possible Causes
- Low coolant level
- Faulty Engine Coolant Temperature (ECT) Sensor
- Stuck or leaking thermostat
- Engine Coolant Temperature Sensor harness is open or shorted
- Engine Coolant Temperature Sensor circuit poor electrical connection
How do I fix code P2185 BMW?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P2185 BMW code
The cost of diagnosing the P2185 BMW code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2185 BMW Description
This Diagnostic Trouble Code (DTC) is stored in the engine control module when the output from the Engine Coolant Temperature (ECT) Sensor is not as expected or missing. The Engine Control Module (ECM) uses information from the Intake Air Temperature Sensor and Engine Oil Temperature Sensor to carry out a plausibility check on the signal. Engine Coolant Temperature Sensors are normally a negative temperature coefficient thermistor. The signal voltage drops as the engine coolant temperature increases. The signal from the sensor is used to adjust the ignition system rate of advance and fuel injection system duration for various operating conditions. A faulty Engine Coolant Temperature Sensor may result in an engine over fuelling or not entering closed-loop control. The rate of ignition advance is reduced when the engine is hot to reduce the possibility of engine knock occurring.