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I have code c0278 c1201 c1223 c1246 c1252 c1253 c1254 c1256. Any idea what could be causing issue

Vehicle: 2001 Toyota 4Runner 3.4 v6

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C0278 ABS solenoid relay

C1201 Powertrain code ABS prohibit

C1223 ABS control system

C1246 ABS ECU voltage  out of range ...

C1252 Hydraulic booster power cicuit

C1253 Hraulic brake booster power supply

Power these code that are set are set due to lack or cutting off of power, You have a ABS fuse which powers the ABS motor relay and TCT motor relay. which supplies power to the hydraulic brake booster, this would be very unusual for it to be the battery power, but rather the ground which is the negative power supply, The hydraulic brake booster ground is more likely missing.or lacking.

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