P0153 - OBD-II Trouble Code

OBD II Fault Code

  • OBD II P0153

Fault Code Definition
When the up and down "cross-counting" voltage activity from the Oxygen Sensor is too slow, code P0153 is triggered and the Check Engine/Service Engine Soon Light will illuminate.

Symptoms

  • Check Engine Light will illuminate
  • In many cases, no abnormal symptoms may be noticed
  • In many cases, the emissions will be elevated

Common Problems That Trigger the P0153 Code

  • Defective Oxygen Sensor
  • Faulty Oxygen Sensor wiring or connections
  • Exhaust System Leak(s)

Common Misdiagnoses

  • Oxygen Sensor is replaced when the problem is faulty Oxygen Sensor wiring or connections
  • Oxygen Sensor is replaced when the problem is a vacuum leak or defective Mass Air Flow Sensor