P2184 P2184 code definition P2184 is an OBD-II generic code for the engine control module (ECM) detecting the engine coolant temperature sensor (ECT) #2 is indicating low range and does not correlate with ECT sensor #1. What causes the P2184...
A P2184 (https://www.yourmechanic.com/article/p2184-obd-ii-trouble-code-engine-coolant-temperature-sensor-2-circuit-low-by-jay-safford) code indicates temp sensor circuit low. That means the voltage that the ECU reads on the temp sensor is low. The ECU interprets this as a hot engine and turns on the fan. A short circuit in...
