Details On DTCs

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: P0117:00, P0118:00
- MAF sensor: P0101:00, P0102:00, P0103:00

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

⁽¹⁾	Value can be verified by displaying PIDs using M-MDS