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2010-2012 Range Rover MkIII / L322
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184 Posts
Discussion Starter · #1 ·
Hi Guy's, as the title says, I have a fault code & was wondering if anyone could point me in the right direction?

Many thanks in advance
 

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2006-2009 Range Rover MkIII / L322
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1,341 Posts
U0421 is an invalid data received from the suspension ride height control module fault, there shouldn't be an R in the code though. The -81 will tell you what, like implausible signal, short to ground, short to battery etc. I don't know what the 81 code is, -94 is implausible signal.
 
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