Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. P2297 OBD-II Trouble Code: O2 Sensor Out of Range During Deceleration Bank 1 Sensor 1

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

Check Engine Light

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Symptoms of a Bad or Failing Flexible Clutch Hose
Common signs include difficulty shifting, low clutch fluid, and feeling no resistance at the clutch pedal.
How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...


Related questions

Q: Fuel pump Check Engine Light issue with operational fuel pump

Code 47 (OBD-1) is the only code that pertains to "fuel pump related faults" in your car, so presumably that is the code that is recurring. If it is not Code 47, but rather a different code, that you are...

Q: Engine light on and vehicle running poorly.

The symptoms your CTS is experiencing are symptoms I have seen often in prior Cadillacs. What I suspect is that your CTS is likely dealing with problems concerning the throttle body. The engine in your CTS is equipped with an...

Q: no check engine light on, but code reader shows Poo1 code, is this a problem

The code P001 is not a good code for your vehicle and it should be cleared. Your fuel mileage of 14.8 may be due to the hot summer weather. Different fuels are made in the summer and they may change...