Dropped my car off at shop today to get looked at because my speedometer doesnt engage until my rpm's reach 2000.

Mechanic told me that these were the codes that he found in the ABS SYSTEM

CO226, 236, 246, 256, 1233, 1223

Says that his shop can't pinpoint exactly what it is but could be brake booster, speed sensors or ABS control module. He told me that he didn't wanna tell me to fix something and when he wasnt exactly sure what it was.

He said i should take it to a lexus dealer because his scanning equipment can EXACTLY pinpoint what it is?

Can anyone save me some money and tell me what the actual problem is before I spend a bunch of money to get a diagnosis from a "Lexus" dealer.

C0226, 236, 246, 256- Open/Short in Hydraulic Brake Booster Solenoid Circuit

C1233 - yaw rate sensor bad

C1223- abs control system malfunction

With that being sad
What would u say is most likely the cause?

You need to check all them out. Isolate one by one.

Did you ever figure out the cause? I'm throwing these codes too

May be better to PM the original poster since the thread is so old. Prolly get a faster response that way.