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Speed sensor wire fault code 4210

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6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHSpeed sensor wire fault code 4210

Leading reported evidence

Disconnect sensor where it plugs in

Suggestion or failed attempt

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Suggestion

You can disconnect the sensor where it plugs in on the hub assembly and take a reading with a resistance meter to see if it's that at fault:

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Speed sensor wire fault code 4210
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Leading evidence: 'Disconnect sensor where it plugs in' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect sensor where it plugs in' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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1 matching discussions · 6 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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Disconnect sensor where it plugs in

No successful repair reported for this finding.

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Reported fixes
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Unsuccessful attempts
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Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

You can disconnect the sensor where it plugs in on the hub assembly and take a reading with a resistance meter to see if it's that at fault:

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Speed sensor wire fault code 4210
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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 1 discussions

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Generation: 20261026T103553Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hello - looking for some guidance please. I had the ABS warning light come on yesterday. Just checked the fault code and found 4210 - speed sensor wire rear right. Is that the sensor itself or the wire that goes to the sensor plug? Many thanks - Graham.

POST 2Original post

It'll most likely be the sensor itself or the reluctor ring. You can disconnect the sensor where it plugs in on the hub assembly and take a reading with a resistance meter to see if it's that at fault: http://911uk.com/viewtopic.php?t=127602

POST 3Original post

I have had sensors fail, reluctor rings fail, and wiring fail. So it just needs a dose of looking at to establish which one it is. MC

POST 4 / ORIGINAL POSTEROriginal post

Thanks Alex and MC - much appreciated.

POST 5Original post

Had that sensor fail on mine recently resulting in some very amusing speedo readings. Take great care getting the old one out; mine decided that it would be a laugh to snap the retaining bolt and to weld its broken end to the hub. Not funny. Incidentally, the car will get you home just fine without the sensor (and mysteriously the speedo is all good), just don't expect to have any ABS (I'm assuming the remaining sensors won't try and work on their own). If you do end up doing something as daft as me and snapping the bolt, then shout as I printed up a drill guide to make sure the stump extracts properly. Getting a corroded sensor out of the hub is just time consuming if you care about not damaging the hub or the sensor ring. Z

POST 6 / ORIGINAL POSTEROriginal post

Good tips - thanks Z. Fingers crossed it will go smoothly. I have suspension work to do so I may delay this job till I get all the other bits around me.

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