Revolution max ECM update
Harley-Davidson technical service bulletin M1559 for 2021-2022 Harley-Davidson RA1250S, 2021-2022 Harley-Davidson RA1250 and 2021-2022 Harley-Davidson RH1250S and others.
- Bulletin number
- M1559
- Component
- Power train
- Summary
- SERVICE BULLETIN M1559: REVOLUTION MAX ECM UPDATE. PURPOSE: This bulletin informs dealers that Harley-Davidson has an Electronic Control Module (ECM) update that is available on Digital Technician II (DT II). This update is to address Diagnostic Trouble Code (DTC) P000000 setting and putting the bike into the fast idle position (4,000 rpm). The update also addresses the concern of an inadvertent tripping of P227900 for the intake air leak under certain riding conditions when no intake leak is present.
Owners of these vehicles have filed 5 complaints in the transmission category.
Vehicles covered
- Harley-Davidson RA1250S 2021-2022 20212022
- Harley-Davidson RA1250 2021-2022 20212022
- Harley-Davidson RH1250S 2021-2022 20212022
- Harley-Davidson RH975 2022 2022
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