Suspension issue

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S8oxl

Member
Posts
11
Hi I have a 2012 disco 4
Yellow suspention error when starting car

Have changed below

Compressor
All hight sensors
Front block
Block near pump
Brake switch

Tested a refurbed height modual

Still got error

Thanks in advance driving me nuts
 

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Thanks any idea where it start lol
According to the WSM for that code you'll have to scan the suspension module too, if no code stored in that one i have no ideea:

U0421-68Invalid Data Received from Suspension Control Module A - Event information
  • Missing/invalid data from the air suspension control module
  • Using the manufacturer approved diagnostic system, check the air suspension control module for related DTCs and refer to the relevant DTC index
 
plus 1 ^^^^

hi

hope u don’t mind me adding but that’s one of the worst things u can do by changing part after part trying to resolve the original fault

by changing multiple parts u start to introduce further items that could be at fault, not unheard of new parts being faulty from out the box

is that the only code u have plse as see there’s an ABS issue, have u carried out a full scan of all the modules , any errors on any plse

indeed as you’ve replaced all the height sensors a full suspension re calibration will be required as a starting point

do u still have all the old parts plse and why were they changed , , personally if u still have them I would refit them back and then do a full rescan , then go through the system step by step, including testing the abs sensors , associated wiring connectors throughout the vehicle

how did u test the suspension module plse

sorry for all the questions but justr is not feel you’ve made it considerably worse , alas I had to virtually rebuild my entire suspension system when i bought my D3 , but that was down to neglect from previous owners, I tested each item including the main loom/ connectors on each and every item ensuring 100% it was faulty before replacement

hope that also helps u

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Meant to add do u have a multimeter plse as that’s also a very useful tool to have

plse ensure ur battery is fully charged , u can do basic testing with a er multimeter

lastly I’m not critising u as that’s the last thing I wish to do , just feel you’ve made it considerably worse with all the parts changing
 
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