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Posted: 9 months ago Posted in Diagnostic Trouble Codes Comments: 0 Views: 230

P0140 ECM Detects No Activity or Abnormal Voltage From the Downstream Oxygen Sensor (Sensor 2, Bank 1) Fault: What is it?

P0140 ECM Detects No Activity or Abnormal Voltage From the Downstream Oxygen Sensor (Sensor 2, Bank 1) Fault: What is it?

Engine control modules (PCM/ECM/ECUs) rely on oxygen sensors for adjusting engine performance and controlling emission levels. The PCM will display fault code P0140 if the oxygen sensor downstream from the catalytic convert (Sensor 2). This is a weak or non-functioning ...