P013E - O2 Sensor Delayed Response - Rich To Lean (Bank 1 Sensor 2)
P013A - O2 SENSOR SLOW RESPONSE - RICH TO LEAN (BANK 1 SENSOR 2)
| Description: | The heated oxygen sensor monitor measures the response rate of the rear heated oxygen sensor (HO2S) to a rich to lean transition. This DTC sets when the measured response rate is slower than the threshold value. | ||
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| Diagnostic Aids: | This monitor is highly sensitive to exhaust leaks near the rear HO2S. Check for leaks in the exhaust system. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||
P013E - O2 SENSOR DELAYED RESPONSE - RICH TO LEAN (BANK 1 SENSOR 2)
| Description: | During a deceleration fuel shut-off (DFSO) event, the rear heated oxygen sensor (HO2S) signal is monitored to determine if the signal is stuck in range. The PCM expects the signal to exceed a calibrated rich or lean value within a calibrated amount of time. If the signal voltage remains less than the rich value after a number of occurrences, the PCM intrusively controls the fuel system rich over increasing time periods in an attempt to force the signal to greater than the calibrated rich value. This DTC sets when after three consecutive intrusive attempts, the signal cannot be forced greater than the calibrated rich value. This DTC also sets when the signal voltage remains greater than the lean value after a calibrated amount of time with the fuel injectors off, a counter is incremented and after three consecutive occurrences the signal is not less than the calibrated lean value. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check for leaks in the exhaust system and for an intermittent HO2S signal. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DW . | ||