DTC P0134:00 [L3 Turbo]

id0102b7702500

DTC P0134:00	A/F sensor circuit no activity detected
DETECTION CONDITION	•  The PCM monitors the element impedance A/F sensor when the following conditions are met. Under the following monitoring conditions, the element impedance more than specified value, the PCM determines that the A/F sensor is not activated. MONITORING CONDITIONS ―  Drive Mode 03 (EGR System, A/F sensor heater, HO2S heater, A/F sensor, HO2S and TWC Repair Verification Drive Mode) ―  The following conditions are met: •  A/F sensor heater is tuned on for 35 s or more •  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 •  Exhaust system leakage •  Short to ground 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 •  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 internal malfunction ―  Leakage engine coolant to combustion chamber ―  Insufficient engine compression •  PCM malfunction

Diagnostic procedure