O2 Sensor Out of Range During Deceleration - Bank 2 Sensor 2
What does P2298 mean?
The P2298 code means the vehicle's onboard diagnostic system has detected: O2 Sensor Out of Range During Deceleration - Bank 2 Sensor 2. This is a moderate severity code.
Common Symptoms
- Check Engine Light illuminated
- Failed emissions inspection
- Catalytic converter efficiency concern
- Slightly reduced fuel economy
- Mild exhaust odor
Probable Causes (Ranked by Likelihood)
- Failing downstream oxygen sensor on bank 2 Very High
- Catalytic converter on bank 2 degrading High
- Exhaust leak between catalytic converter and sensor Moderate
- O2 sensor contaminated by coolant or oil Moderate
Step-by-Step Diagnostic Procedure
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Monitor bank 2 sensor 2 readings during deceleration
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Compare downstream sensor readings to upstream for catalyst efficiency
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Check for exhaust leaks near the bank 2 catalytic converter
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Inspect the O2 sensor for contamination (white or oily deposits)
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Check for coolant or oil consumption that could contaminate the sensor
Frequently Asked Questions
Can I drive with code P2298?
Short distances are fine. The catalytic converter may be degrading but the vehicle is safe to drive. Get it checked before your next emissions test.
What causes P2298?
Usually a failing downstream O2 sensor or a catalytic converter that is losing efficiency. The sensor reading out of range during decel is a key indicator.
Is P2298 expensive to fix?
Costs range from $150 for a sensor to $800 if the catalytic converter needs replacement. Start with the sensor replacement as it is cheaper and often sufficient.