Bosch Gen4 Error code 603

dixie600mhz

Active member
Joined
Oct 13, 2020
Messages
174
Reaction score
160
Location
Austin, Texas
Driving home last night on 2021 Rail 9.8XT I'm having a blast. Pop the bike from emtb to turbo mode and got a 603 error about 5 minutes in. The battery was at about 60% charge.

Error 603, please contact your dealer. So the bike is in limp mode. I pull the battery and reseat, reboot and we're back in business and all is well. I make it home with assist in emtb mode.

This morning I was about 8 miles into a ride in emtb, no issues. Pop it into turbo and after a few minutes error 603. I got past it again by pulling the battery and rebooting. The bike has about 300 miles on it.

It looks like the 603 is a general battery pack error. It only seems to happen in turbo, but I notice it's $1k for a new battery. Time for a warranty claim?
 
⚡ EMTB Pro Go Pro — exclusive discounts & ad-free Peaty's 25% off & more · Ad-free browsing · Pro badge See the deals →
After months of fighting this problem the fix was to update the battery/motor firmware to 2022 release. No more error code or shutdowns with the same battery.
 
Keep reading
    Browse all

    Similar Threads

    Community Stats

    Since 2018
    669K
    Messages
    40,903
    Members
    Join 30,000+ Riders, it's free!
    Back
    Top