Oxygen Sensor Out of Range During Deceleration Bank 1 Sensor 1
Table of contents
P2297 HYUNDAI 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
How do I fix code P2297 HYUNDAI?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P2297 HYUNDAI code
The cost of diagnosing the P2297 HYUNDAI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2297 HYUNDAI 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.