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DTC P0140-00; Ho2S Circuit No Activity Detected: Notes

NOTE:

To determine the malfunctioning part, proceed with the diagnostics from "Function Inspection Using M-MDS".

Details On DTCs

DETECTION CONDITION AND POSSIBLE CAUSE

DESCRIPTION	HO2S circuit no activity detected
DETECTION CONDITION	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 V^1 The following DTCs are not detected: HO2S: P0137:00, P0138:00 ECT sensor No. 1: P0117:00, P0118:00 MAF sensor: P0101:00, P0102:00, P0103:00 ^1 : Value can be verified by displaying PIDs using M-MDS
	Drive cycle	2
	Self test type	CMDTC self test
	Sensor used	HO2S
FAIL-SAFE FUNCTION	Not applicable
VEHICLE STATUS WHEN DTCs ARE OUTPUT	Illuminates check engine light.
POSSIBLE CAUSE	HO2S signal line error HO2S connector or terminals malfunction PCM connector or terminals malfunction Short to ground in wiring harness between HO2S terminal A and PCM terminal 2AI Open circuit in wiring harness between HO2S terminal A and PCM terminal 2AI HO2S loose HO2S malfunction Exhaust gas leakage from exhaust system (between A/F sensor and HO2S) Insufficient engine compression HO2S heater malfunction PCM malfunction