P2297 - Oxygen Sensor Out of Range During Deceleration Bank 1 Sensor 1

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3   
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Possible causes

  • Exhaust leaks before or near the Rear Heated Oxygen Sensor (HO2S)
  • Faulty Rear Heated Oxygen Sensor (HO2S)
  • Rear Heated Oxygen Sensor (HO2S) harness is open or shorted
  • Rear Heated Oxygen Sensor (HO2S) circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2297 Description

During a Deceleration Fuel Shut-Off (DFSO) event, the Powertrain Control Module (PCM) monitors how quickly the rear heated oxygen sensor (HO2S) switches from rich to lean. The measured rate of the rich to lean switch is compared to a calibrated threshold value. The threshold value takes into account the level of oxygen in the catalyst, which has an impact on how quickly the rich to lean switch occurs. The test fails when the measured value is slower than the threshold value.
OBDII Code P2297 - Oxygen Sensor Out of Range During Deceleration Bank 1 Sensor 1 - AutoCodes.com

P2297 Information for specific makes

  • P2297 DODGE Oxygen Sensor Out of Range During Deceleration Bank 1 Sensor 1
  • P2297 FORD Oxygen Sensor Out of Range During Deceleration Bank 1 Sensor 1
  • P2297 HYUNDAI Oxygen Sensor Out of Range During Deceleration Bank 1 Sensor 1
  • P2297 LINCOLN Oxygen Sensor Out of Range During Deceleration Bank 1 Sensor 1
  • P2297 MERCURY Oxygen Sensor Out of Range During Deceleration Bank 1 Sensor 1

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