DTC P013E:00 [MZI-3.7]: Notes
WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE
| DTC P013E:00 |
HO2S (RH) delayed response-rich to lean |
| DETECTION CONDITION |
- During a deceleration fuel shut-off event, the PCM monitors the HO2S (RH) 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 forcefully 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 if after 3 consecutive forced 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 incremented The test fails if after 3 consecutive occurrences the signal is not less than the calibrated lean value.
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| POSSIBLE CAUSE |
- Exhaust leaks before or near the HO2S (RH)
- Aftermarket exhaust accessories or performance modifications
- Ethanol content in the fuel
- Circuit intermittent
- HO2S (RH) malfunction
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