DTC P013E: Sensor Delayed Response - Rich To Lean (Bank 1, Sensor 2)
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
P013E - SENSOR DELAYED RESPONSE - RICH TO LEAN (BANK 1, SENSOR 2)
| Description: | During a deceleration fuel shut-off (DFSO) event, the powertrain control module (PCM) monitors the rear heated oxygen sensor (HO2S) signal 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. The test fails when, after three consecutive intrusive attempts, the signal cannot be forced greater than the calibrated rich value. Also, if the signal voltage remains greater than the lean value after a calibrated amount of time with the fuel injectors off, a counter is incriminated. The test fails when 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. Check for an intermittent HO2S signal. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DW . | ||