70 O2 Sensor Error MP4000

Description 

O2 Sensor Error 

  • Occurs during pretrip (PTI) test only. 
  • If the sensor reading is not ready and valid within 10 minutes. 
  • Indicates: 
  • Failing sensor, not capable of heating up or create conditions for valid reading. 

Corrective Action 

  • Redo the test. 
  • Replace sensor.

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