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P0125 ECT SENSOR EC-193 < DTC/CIRCUIT DIAGNOSIS > [VQ35HR] C D E F G H I J K L M A EC N P O P0125 ECT SENSOR Description INFOID:0000000005236795 The engine coolant temperature sensor is used to detect the engine <Reference data> *: These data are reference values and are measured between ECM terminals 71 DTC Logic INFOID:0000000005236796 DTC DETECTION LOGIC NOTE: P0117, P0118. Refer to • If DTC P0125 is displayed with DTC P0116, first perform the trouble diagnosis for DTC P0116. Refer . DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following procedure Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. >> GO TO 2. 2. CHECK ENGINE COOLANT TEMPERATURE SENSOR FUNCTION With CONSULT-III 1. Turn ignition switch ON. SEF594K Engine coolant temperature [ ° C ( ° F)] Voltage* (V) Resistance (k Ω ) –10 (14) 4.4 7.0 - 11.4 20 (68) 3.5 2.37 - 2.63 50 (122) 2.2 0.68 - 1.00 90 (194) 0.9 0.236 - 0.260 SEF012P DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0125 Insufficient engine cool- • Voltage sent to ECM from the sensor is not practical, even when some time has passed • Engine coolant temperature is insufficient for closed loop fuel control. • Harness or connectors (High resistance in the circuit) • Engine coolant temperature sensor |