christopher_loewe6
Avantime Brake Booster Pressure Sensor Failure
4 comment(s)
christopher_loewe6 (Author)
The error code is definitely pointing towards the brake booster pressure sensor. No ABS light, thankfully. You mentioned air in the system causing hydraulic brake issues... was that the root cause in your case? Trying to understand how one thing led to another...
emily_flame33
After numerous frustrated hours, I concluded that the brake booster sensor needed replacing by a professional after a mishap during bleeding. The master cylinder needed some love, too. If you're uncertain about bleeding the brakes yourself, I'd seriously recommend taking it to a workshop. It’s a safety issue!
christopher_loewe6 (Author)
Cheers for the advice! Took it to a local workshop, and they confirmed your hunch. The brake system hadn't been bled properly, which buggered the sensor. New sensor fitted (90€ all in), system bled correctly, and all is well... for now!
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emily_flame33
That sounds familiar. I had a similar issue with my old Saab 9-3. Same symptoms, spooky error message and spongy brakes. Did the error code specifically point to the pressure sensor? My mechanic mentioned something about the hydraulic brakes misbehaving when there's air in the system. Is your ABS light on too?