P2297 OBD-II Trouble Code: O2 Sensor Out of Range During Deceleration Bank 1 Sensor 1

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Cost of diagnosing the P2297 code

P2297 is a diagnostic trouble code (DTC) for "O2 Sensor Out of Range During Deceleration Bank 1 Sensor 1". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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P2297 code definition

O2 Sensor Out of Range During Deceleration Bank 1 Sensor 1

(May be seen with other oxygen sensor codes)

What the P2297 code means

P2297 means that the oxygen sensor (O2) has out of range sensor performance when the vehicle is decelerating for bank 1 sensor 1. When this occurs, the electronic control unit (ECU) detects the out of range performance and causes the P2297 code to be set. This causes the Check Engine Light to be illuminated on the dashboard.

With the check engine light comes a failsafe mode that is used to protect the vehicle from any further damage. Once the failsafe mode is enacted, it will remain until normal operation is found, or the code is repaired.

What causes the P2297 code?

  • Exhaust leaks
  • Failed oxygen sensor
  • Open or short in the oxygen sensor wiring harness
  • Poor electrical connection
  • ECU failure

What are the symptoms of the P2297 code?

Likely symptoms are:

How does a mechanic diagnose the P2297 code?

  1. Checks for any codes stored in the ECU, including history or pending codes.

  2. Notes all codes and the freeze frame data associated with each code for future use

  3. Clears all the codes for a fresh start

  4. Takes the vehicle on a road test to attempt to duplicate the symptoms

  5. Performs a visual inspection will be to look for any obvious signs of failure and damage

  6. Uses the scan tool to look at the live engine data and the oxygen sensor readings while the vehicle is operated (if the readings do not change as the throttle is operated, then a multimeter will be used to check for voltage at the oxygen sensor)

  7. Checks the exhaust for any leaks present

  8. Lastly, checks the ECU for any faults (this test will be done by the manufacturer's test procedures)

Common mistakes when diagnosing the P2297 code

With even the simplest trouble code, mistakes can easily be made when diagnosing them if step-by-step diagnosis is not performed. Skipping, or not completing any step can lead to errors and wasting time and money.

How serious is the P2297 code?

The P2297 code should not prevent the vehicle from being driven to a safe location once the code is set. If the vehicle runs poorly, it should not be driven until it is repaired and working as designed again.

What repairs can fix the P2297 code?

  • Replacing an oxygen sensor
  • Repairing any exhaust leaks found
  • Repaired or replacing wiring harness
  • Repairing poor electrical connections
  • Replacing the ECU

Additional comments for consideration regarding the P2297 code

Leaking exhaust can be a common cause of the P2297 code. Diagnosing exhaust leaks is usually quick and easy if you know what to look for. The first sign is a sooty black stain on the exhaust. This is a sign that unburned fuel is exhiting the exhaust before the catalytic converter. The other way to tell is that you can usually feel the air exiting the exhaust at the leak point.

Need help with a P2297 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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Anthony

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Anthony was great! We are very happy that we chose to go with this company instead of the overpriced and slow service we get from the Jeep dealership. He was on time and did the job just as expected. He identified a couple of other things that need to be done before the problems get worse. We appreciate having a technician give us direct feedback regarding our vehicle, rather than a service advisor (salesperson) that we've had to deal with in the past at the dealership. We'll be booking the addtional services very soon and will definitely request Anthony again now that he is familiar with our vehicle!

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37 years of experience
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37 years of experience
Subaru Forester - Check Engine Light is on - Santa Fe Springs, California
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Anthony

6 years of experience
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Anthony
6 years of experience
BMW 740Li - Check Engine Light is on - Roseville, California
Very helpful in finding out the fault codes in my bmw 740 li. It was simple fix and that the two tube hose just had to be connected and my drive train malfunction went away. This saved me from having to go the an expensive dealership. Anthony has a good attitude about his work.

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