ABS light on, code 51?

PADGAR

MEMBER
2002 SUBARU WRX
2.0L
4 CYL
TURBO
4WD
MANUAL
200,000 MILES

I go to scan the codes and I get code 51, I erase it and get codes 21, 54. I erase it again and get code 31, and 61 then erase that and get code 22 when I erase it again it just repeats one of the last codes endlessly. Never seen an issue like this and not sure what to do. Images below.

Wednesday, August 3rd, 2022 AT 5:53 PM

2 Replies

PADGAR

MEMBER
2 POSTS

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Wednesday, August 3rd, 2022 AT 5:53 PM

JACOBANDNICKOLAS

MECHANIC
110,055 POSTS

Hi,

I suspect you are getting those simply due to a faulty wheel speed sensor. In this case, it appears to be the right front.

Do me a favor. Test it to see if it is good. All you need is a voltmeter or multimeter.
Here is a link that explains how it's done:

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

If you already have, let me know. Actually, try a hard reset. Disconnect the battery terminals. Tie them together using a zip tie and allow them to sit for about 10 minutes.

Tying them together drains capacitors, so that is why I'm suggesting it. Reattach the battery, drive the vehicle and see if the light comes back on. If it does, recheck the codes.

Take care,

Joe

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Wednesday, August 3rd, 2022 AT 9:12 PM