Codes C1252 and C1256, ABS light on?

2018 TOYOTA LANDCRUISER
111,150 MILES • 5.7L • V8 • 4WD • AUTOMATIC
Avatar
SUHAILKADER
  • MEMBER
  • 14 POSTS
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.
Aug 7, 2024 at 5:43 PM
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,548 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.
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Aug 8, 2024 at 4:05 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle