NISSAN Mikra K12 DTC remove please

[Arkan1976]

hello
please can any one help me need to remove and checksum Manuel please the Fault Code : P0420 from damp ECU
NISSAN Mikra K12 ECU : Hitachi MEC37-320
MCU : SH7054 .
best regards

[farawhy1]

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[Arkan1976]

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thank you very much ....