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Dan, Technician
Category: Toyota
Satisfied Customers: 24211
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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I have the following codes showing up. C1251 C1223 P0420

Customer Question

I have the following codes showing up.
Submitted: 1 year ago.
Category: Toyota
Expert:  Dan replied 1 year ago.
Hello, my name is***** most likely means the Hydraulic brake booster pump motor has failed and this would also cause the C1223 code. P0420 usually means the catalytic converter has failed. The brake booster pump motor is about a $500 job and converter is about $1000 but you may be able to get it done cheaper at a exhaust shop. .If vehicle still drives fine you are probably best off just dealing with the codes. Let me know if you have more questions, thanks.