Fault handling, (I) catalyst damaging misfire
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Fault handling, (I) catalyst damaging misfire
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In the event of misfiring which is harmful to the three way catalytic converter the
driver is immediately warned by the CHECK ENGINE lamp (MIL) flashing at a frequency of 1
Hz, regardless of whether it was already on or not. A diagnostic trouble code is also
generated. To facilitate fault diagnosis a special code is generated at the same time if there is
less than 10 litres of fuel in the tank.
For the CHECK ENGINE lamp (MIL) to go out by itself, 3 consecutive driving cycles
carried out under similar conditions as when the fault first occurred must be completed without
any misfiring which is harmful to the three way catalytic converter occurring.
For the diagnostic trouble code to be cleared, as well as any special code for low fuel
level that may also have been generated, 40 faultless warm-up cycles must also be
completed.
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1.
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Fault criteria for catalyst damaging misfire
fulfilled
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2.
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CHECK-ENGINE
light blinks at 1Hz, fault code is set. In case of low fuel level a code is set for this as
well.
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3.
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Catalyst damaging misfire stops.
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4.
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CHECK-ENGINE light on steady
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5.
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Catalyst damaging misfire does not occur in 3 consecutive driving cycles with
similar conditions as when the fault first occurred.
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6.
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CHECK-ENGINE light off
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8.
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No misfiring harmful to three way catalytic converter in 40 warm-up
cycles.
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