Why do I hate the Motor Control Warning message? - Alfa Romeo Forum
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Why do I hate the Motor Control Warning message?

After three months of having this warning on all the time on my 156 Selespeed, I had the car serviced this week and the warning turned off.

This time it was a warning about a sensor on the cat. Last time it was a missfire on No 4 cylinder. Nothing the garage ever does seem to fix these faults although when the car was under warranty the Alfa dealer faithfully replaced all the necessary parts whenever the warning produced a code they could understand! As fas as I could tell, the Motor Control warning was an income generating device for Alfa dealers!!

Recently I also had the air bag warning light on as well; but thanks to this forum I was able to cure that by fiddling around with the wires under tha passenger seat!

Hey ho. Great cars but do I hate that warning!!
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Join Date: Jun 2005
Posts: 106

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GT JTS 2.0

Re: Why do I hate the Motor Control Warning message?

I had this issue for months, the garage tried once, replacing a cat sensor before I realised they were guessing as, despite the err it could be a host of things and them fiddling breaks things

In the end I found the issue to be the wire from sensor to loom was left dangling rather than clipped in. It was resting on the ex manifold so once the engine got hot, resistance went down and the signals suddenly shot up and the ECM saw that as an out of bounds reading and lit up the light. It was as simple as that, moved the wire and 3 starts later, light off for 3 months so far.

How did it get that way, cambelt replacement, as above, when people fiddle, things break


There's nothing in the dark that isn't there in the light ..... except fear
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