P013B - O2 Sensor Slow Response - Lean To Rich (Bank 1 Sensor 2)
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DTC DESCRIPTION P013B - O2 SENSOR SLOW RESPONSE - LEAN TO RICH (BANK 1 SENSOR 2)
| Description: | During a deceleration fuel shut-off (DFSO) event, the PCM monitors how quickly the heated oxygen sensor bank 1, sensor 2 (HO2S12) switches from lean to rich. The measured rate of the lean to rich switch is compared to a calibrated fault threshold value. The measured rate of the lean to rich switch is compared to a calibrated fault threshold value. This DTC sets when the measured value is slower than the threshold value. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check for leaks in the exhaust system. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW. | ||