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Codes C1252 and C1256, ABS light on?

Tiny
SUHAILKADER
  • MEMBER
  • 2018 TOYOTA LANDCRUISER
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 111,150 MILES
DTC code C1252, C1256.
Replaced ABS brake booster and master cylinder assembly one month ago (OEM Parts). After one month I'm having the same problem. This time when I checked the booster assembly the pump motor was not working. So, I replaced the pump motor. But when I press the brake pedal, I can hear a leak noise from the assembly.
Are there any parts like ABS control unit causing this issue or the new OEM booster cylinder assembly went bad?

Looking forward for some suggestions.
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Thursday, August 8th, 2024 AT 12:43 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 45,631 POSTS
Yep, you nailed it, the new ABS brake pump and module may be defective.

DTC C1252: Hydro-Booster Pump Motor Failure

DTC C1256: Accumulator Low Pressure

I would check the ABS fuses (12) to make sure none of them are blown, here is a guide to help and I have included the fuses that need to be checked on their location in the images below.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the images (below). Let us know how it goes.
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Thursday, August 8th, 2024 AT 11:05 AM

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