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Diagnostic code 42


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The speed signal comes from the speedo to the ecu. If the speedo is not working, then there's cable, gearbox or speedo fault. If the speedo is working, then the speedo, signal wire or ecu is broken. Is your spd signal wire spliced or modified some way?
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I've been trying to find the problem for 2 years now checked all wiring all fine so I gave up lol

It shows everytime you drive your car or every now and then? Mine shows up every now and then.. most of the time it do it while im on 5th and boost is building slowly...

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