The Toyota C1201 code can be tricky to diagnose and fix as it is such a general trouble code.
One of the common causes of this code is large EVAP leak.
Usually, code P0455 and P0441 are associated with it.
Are you getting any code besides the C1201?
The C1201 is the one which signals the vehicle to turn on the check engine light and disable the traction control and VSC.
Let me know what type of issues you are experiencing.
As typically you will get more codes with the C1201.
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Sunday, January 30th, 2022 AT 6:05 PM