DTC P0140-00: O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2) [07/2015 - 08/2018]: Contents

DTC No.	Detection Item	DTC Detection Condition	Warning Indicate	Memory	Fail-safe Operation	Note
P014000	O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)	HO2S circuit no activity detected	Check engine light: ON Master warning light: OFF Charging system warning light: OFF Engine oil warning light: OFF Wrench warning indicator light: OFF	DTC stored	Not applicable	Drive cycle: 2 Monitor item: A/F sensor, HO2S Self test type: CMDTC self test

DETAILS ON DTCS

DTC DETECTION CONDITION	HO2S circuit no activity detected
	Determination conditions	With the estimated temperature of the HO2S element exceeding the specified value, a condition in which the HO2S signal voltage is less than the specified value continues for the specified period.
	Preconditions	Battery voltage: above 11 V1 The following DTCs are not detected: HO2S: P013700, P013800 ECT sensor: P011700, P011800 MAF sensor: P010100, P010200, P010300 1: Value can be verified by displaying PIDs using Techstream
	Drive cycle	2
	Self test type	CMDTC self test
	Sensor used	HO2S
FAIL-SAFE OPERATION	Not applicable
VEHICLE STATUS WHEN DTCS ARE OUTPUT	Illuminates check engine light.
TROUBLE AREA	HO2S signal line error HO2S connector or terminals malfunction ECM connector or terminals malfunction Open circuit / Short to ground in wiring harness between HO2S terminal E4-2 and ECM terminal A42-41 HO2S loose HO2S malfunction Exhaust gas leakage from exhaust system (between A/F sensor and HO2S) Insufficient engine compression HO2S heater malfunction ECM malfunction