P2297 moderate

O2 Sensor Out of Range During Deceleration - Bank 2 Sensor 1

The P2297 code means the vehicle's onboard diagnostic system has detected: O2 Sensor Out of Range During Deceleration - Bank 2 Sensor 1. This is a moderate severity code.

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Keep driving?
Short distances only
DIY difficulty
moderate
Estimated cost
$150 - $500 (parts and labor)
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Common Symptoms

  • Check Engine Light illuminated
  • Poor fuel economy
  • Failed emissions test
  • Slight hesitation during deceleration
  • Engine may run slightly rich

Probable Causes (Ranked by Likelihood)

  • Failing oxygen sensor on bank 2 Very High
  • Exhaust leak near the bank 2 sensor High
  • Fuel injector leaking on bank 2 Moderate
  • Damaged O2 sensor wiring or connector Moderate

Step-by-Step Diagnostic Procedure

  1. Monitor bank 2 sensor 1 O2 readings during deceleration with scan tool

  2. Inspect exhaust manifold and pipes on bank 2 for leaks

  3. Check O2 sensor wiring and connector for damage

  4. Compare bank 1 and bank 2 sensor readings for asymmetry

  5. Inspect fuel injectors on bank 2 for leaks or dripping

Frequently Asked Questions

Can I drive with code P2297?

Short distances are okay. The vehicle will have reduced fuel economy and may not pass an emissions test but is generally safe to drive.

What causes P2297?

Most commonly a failing oxygen sensor on bank 2 that is slow to respond or reading out of range during fuel cut-off deceleration.

Is P2297 expensive to fix?

Typically $150 to $500. O2 sensor replacement is the most common fix. Check for exhaust leaks first as they can cause false sensor readings.

Sources

This page is built from documented references. Verify against your own service info before repair work.

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