HD ULTRA CLASSIC 2009, fault code d1A9. Check engine light comes on from time to time at lower speeds <50 mph.
SOURCE: check engine light acting up
The first thing I would check is the voltage output from the charging system. If the regulator isn’t regulating, the voltage will keep climbing as the engine speed increases. The electronics in the speedometer don’t work well at these high voltages. This would also explain the bright marker lamps. You should be able to see this with a simple voltmeter across the battery terminals.
SOURCE: how do you retrieve codes, and what they mean
You have to take your bike into the dealership and have them connect the digital technition to the bike to read the codes.
SOURCE: The engine light keeps coming on and going out,
What triggers the chk engine light is the the exhaust emisions. You can't feel the ozones falling? Have your cards adjusted, you are running to rich.
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