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Bosch error 0x550354: 12 V outlet drawing excess current

Bosch eBike (DiagnosticTool / eBike Flow hex code)Dealer neededSafe to keep riding

The system has detected that the accessory port is pulling more current than the outlet is rated to supply. Bosch protects the drive by cutting power to the 12 V outlet so the main battery and controller are not overloaded. Motor assist continues to work normally; only the powered accessory is disabled until the fault clears.

Drive system	Bosch eBike (DiagnosticTool / eBike Flow hex code)
Severity	Dealer needed
Keep riding?	Safe to keep riding
Typical cost	A dealer diagnostic typically runs 40 to 80 EUR, outlet or wiring repair 30 to 120 EUR, and a full harness replacement 80 to 200 EUR depending on the frame and routing.

Likely causes

Short circuit in a third-party light, USB charger or other 12 V accessory
Damaged or pinched cable between the accessory and the outlet
Water or corrosion inside the 12 V connector
Faulty aftermarket device drawing current beyond its rating
Worn or chafed wiring routed along the frame or head tube

How to fix Bosch error 0x550354

Switch the bike off and remove the battery or shut down via the display.
Unplug every consumer from the 12 V outlet.
Inspect the plug, socket and cable for damage, bent pins, water or green corrosion.
Dry any moisture and clean the contacts with electrical contact spray if available.
Reconnect only the original Bosch-approved accessory and switch the system on to test.
If the error returns with the original accessory, leave the outlet unused and book a dealer diagnostic.
Take the bike to an authorised Bosch dealer for a full wiring and outlet check.

Go to a dealer if: A dealer is required when the fault returns after unplugging all accessories, or when cable damage, corrosion or a suspected short is visible.
Warranty: Cable faults caused by wear, water ingress, crashes or third-party accessories are not covered; a genuine outlet or wiring defect inside the two-year warranty period is normally replaced free of charge.
Typical cost: A dealer diagnostic typically runs 40 to 80 EUR, outlet or wiring repair 30 to 120 EUR, and a full harness replacement 80 to 200 EUR depending on the frame and routing.

Still stuck? Take a photo of the display and show it to a local e-bike workshop. Bring the bike's system name (e.g. Bosch Performance Line CX) and the exact code; that saves diagnostic time and money.

Frequently asked

Can I reset Bosch error 0x550354?

There is no manual reset. Switch the bike off, unplug every device from the 12 V outlet, then power the system back on. The code clears automatically once the current draw drops back inside spec.

Is it safe to keep riding with this error?

Yes, the motor continues to work normally and the bike remains roadworthy. Only the 12 V accessory port is disabled until the cause is removed.

How much will the repair cost and is it under warranty?

Most repairs fall between 30 and 200 EUR at an authorised dealer. Genuine outlet or wiring failures inside the two-year warranty period are usually covered; damage from water, crashes or aftermarket accessories is not.

Related Bosch codes

0x503001 · Speed sensor signal missing or invalid 0x503002 · Speed sensor magnet misplaced or tampered 0x510001 · Internal sensor error stalling motor assist 0x512001 · ABS and fleet parameters both enabled

Manuals and video

Official source: www.ridewill.com

Not an official Bosch document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.