DTC P2196:00 [ZJ, ZY]

id0102c0709400

DTC P2196:00	A/F sensor signal stuck rich
DETECTION CONDITION	•  The PCM monitors the A/F sensor output current when the following conditions are met. If the output current is 0.85 A or less for 25 s, the PCM determines that the A/F sensor signal remains rich. MONITORING CONDITIONS ―  ECT: 70 °C {158 °F} or more ―  Engine speed: 1,000—3,200 rpm ―  MAF amount: 6—80 g/s {0.80—10.58 lb/min} ―  Target A/F feedback system status: feedback control Diagnostic support note •  This is an intermittent monitor (A/F sensor, HO2S). •  The MIL illuminates if the PCM detects the above malfunctioning 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 PCM detects the above malfunction conditions during first drive cycle. •  FREEZE FRAME DATA is available. •  The DTC is stored in the PCM memory.
POSSIBLE CAUSE	•  A/F sensor heater malfunction •  A/F sensor malfunction ―  A/F sensor looseness ―  Leakage exhaust gas ―  A/F sensor malfunction •  MAF sensor malfunction •  Improper operation of fuel injector •  Fuel supply system or improper fuel line pressure ―  Pressure regulator (built-in fuel pump unit) malfunction ―  Fuel pump unit malfunction ―  Fuel filter clogged or restricted ―  Fuel leakage on fuel line from fuel distributor and fuel pump unit •  PCM malfunction

Diagnostic procedure