Fault handling I, catalyst damaging misfiring
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Fault handling I, catalyst damaging misfiring
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If catalyst damaging misfiring occurs, the driver is warned immediately by the CHECK ENGINE lamp flashing at 1 Hz, irrespective of whether the lamp was already on or not. A diagnostic trouble code will be generated at the same time.
For the CHECK ENGINE lamp to go out without any other measures being taken requires 3 consecutive driving cycles under similar operating conditions as when the fault first occurred without the catalyst damaging misfiring returning.
For the diagnostic trouble code to be cleared requires a further 40 fault-free warming-up cycles.
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1.
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Fault criteria for catalyst damaging misfiring fulfilled
Dependents are OK
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2.
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CHECK ENGINE lamp flashing at 1 Hz, diagnostic trouble code generated
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3.
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Catalyst damaging misfiring ceases
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4.
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Diagnostic trouble code cleared
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5.
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CHECK ENGINE lamp goes on continuously
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6.
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Catalyst damaging misfiring does not occur for 40 warming-up cycles
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7.
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Catalyst damaging misfiring does not occur for 3 consecutive driving cycles under similar operating conditions as when the fault first occurred
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9.
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CHECK ENGINE lamp goes out
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