DTC P0134:00 [MZR 2.0 DISI i-stop]

id0102d4702500

DTC P0134:00	A/F sensor circuit no activity detected
DETECTION CONDITION	•  The PCM monitors the input voltage from the HO2S when the following conditions are met. If under the following monitoring conditions, the input voltage more than 3.22 V, the PCM determines that the A/F sensor is not activated. MONITORING CONDITIONS ―  Drive Mode 03 (A/F sensor, HO2S, A/F sensor heater, HO2S heater and TWC Repair Verification Drive Mode) ―  The following conditions are met: •  A/F sensor heater is tuned on for above 30 s. •  Battery voltage: 10—18 V Diagnostic support note •  This is an intermittent monitor (A/F sensor, HO2S). •  The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. •  PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. •  FREEZE FRAME DATA (Mode 2)/Snapshot data is available. •  The DTC is stored in the PCM memory.
POSSIBLE CAUSE	•  A/F sensor looseness •  Leakage exhaust system •  Open circuit in wiring harness between the following terminals: ―  A/F sensor terminal 1C—PCM terminal 2Z ―  A/F sensor terminal 1B—PCM terminal 2AC ―  A/F sensor terminal 1A—PCM terminal 2AD ―  A/F sensor terminal 2D—PCM terminal 2C •  A/F sensor malfunction ―  A/F sensor deterioration •  Engine malfunction (Engine coolant leakage to combustion chamber) •  Insufficient engine compression •  PCM malfunction

Diagnostic procedure