Just before Christmas I had the classic 3 yellow warning lights (abs/dsc/handbrake). I got the diagnostics run which showed faults 5DF0 and 5DF1. So may need to go the ecu-testing route for abs/dsc hydro module repair. I have seen lots of threads on this forum about this.
It appears from members posts that the warnings can be triggered by various causes ie faulty pressure sensors/ steering angle sensor / wheel sensors etc etc. MY QUESTION IS - once diagnostics have come up with fault codes, are these reliable, ie do I take it that the abs pump IS faulty?
Any clarification appreciated.
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Diagnostics fault codes
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patriot66
- Lifer
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Diagnostics fault codes
I had exactly the same problem several years ago now. Sent the ABS pump to ECU Testing and it was fine. Fitted 2 new brake pressure sensors and no difference. Pulled all the wheel speed sensors and gave them and the reluctor rings a good clean...sorted ! No more warning lights. Cleared codes and all good since 
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Mike6
- Senior Member
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- Joined: Thu Aug 20, 2015 1:17 pm
Diagnostics fault codes
My money would be on the wheel speed sensors, very cheap to buy and easy to replace. I would bother cleaning them just peplace and get a very small brush through the hole and clean any dust off the reluctor rings.