// Official meaning
The SBC system reports its high-pressure reserve as depleted — the unit cannot build or hold the hydraulic pressure it is designed to keep in reserve.
// On the bench
C2498 often turns up alongside C249F as part of the service-message family, and in that pairing a reset can clear it. On its own, though, it is telling you the pump cannot hold its pressure reserve — an active hydraulic failure, not a counter. This is one we tell customers not to sit on.
How it shows up
- "SERVICE BRAKE! VISIT WORKSHOP!" message on the dash
- Frequently stored together with C249F
- Warning returns quickly after clearing
What fixing it involves
Three honest routes, all through our dedicated SBC workshop at sbc-repair.com: a counter reset (£120 — nothing replaced, only right if the pump tests healthy), a full rebuild of your own unit (£430, 6-month warranty), or an exchange pump (£700, 12-month warranty, no core return). Complete on-car service — repair, reprogram, bleed and initialise — from £650.
Frequently asked questions
C2498 came up with C249F — which do I deal with?
Both, in one job. When they appear together it is usually the lifetime-counter service message; when C2498 stands alone the pressure reserve genuinely cannot be held. We test the pump before recommending reset, rebuild or exchange.
Will a counter reset fix C2498?
Only when it is part of the service-message pairing and the pump tests healthy. A pump that genuinely cannot hold pressure needs a rebuild or an exchange unit — a reset would just hide it, and we do not do that with brakes.