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Old 06-11-2017, 06:53 PM #1
keakar keakar is offline
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C1223/C1256 abs codes on scanner but no engine codes or lights
I have 2 codes that show up on my ob2 scanner (06 4runner 4.7 v8 sport)

1 - C1223 malfunction in antilock control system

2 - C1256 accumulator low pressure malfunction

so what is going on and what do I need to buy (or do) to fix this?

I should ad that the brake fluid looks clean and is at the full level mark


also if something is wrong with something, why didn't I see a check engine code?
Last edited by keakar; 06-11-2017 at 06:57 PM.
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Old 06-11-2017, 09:06 PM #2
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Abs codes don't always trigger CEL

Does your abs pump run for long periods of time ?
Like this ?
https://m.youtube.com/watch?v=jW3Yk4K0jPc
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Old 06-12-2017, 02:30 AM #3
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Quote:
Originally Posted by lightfreak View Post
Abs codes don't always trigger CEL

Does your abs pump run for long periods of time ?
Like this ?
https://m.youtube.com/watch?v=jW3Yk4K0jPc
I have no idea, I don't hear anything but have no clue how to check if its running or not.

it doesn't make squealing noises like the one in that video that's for sure
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Old 06-12-2017, 04:54 PM #4
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so no one hear at this website knows how to check to see if the pump runs too long?
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Old 04-22-2019, 02:37 PM #5
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Hey guys - just giving this thread life again. I’m in the same situation and have a 3 codes with no CEL illuminated: (03 v6 4wd 230k)

C1223
C1256
P0430 bank 2 (this one in scanner is labeled “history”?? I replaced gas cap and the CEL went off last week)

Because the CEL / vsc Trac lights disappeared I stopped by a shop to make sure the p0430 was really gone, but then I got more than I bargained for with the c1223 and c1256. Didn’t even know anything was wrong. Can’t find a whole lot of guidance but welcome any thoughts of how to go about it. The brakes seem to be working just fine.

Any ideas?!?!
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