P013B - O2 Sensor Slow Response - Lean To Rich Bank 1, Sensor 2
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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: HEATED OXYGEN SENSOR (HO2S) . | ||