Engine Light Cancelled By Fog Lights

2009 Mazda 2.2D Sport - Had the yellow engine light appear whilst on holiday. Returned home, straight into my regular mechanic and asked him to check it out.

No suprise to hear it was a cam chain issue caused by a faulty oil pump.

Next question - “How much to sort out?”

“Wouldn't be worthwhile, given you have 160K Miles and you don't want to be spending over a grand sorting all that out.”

So he put it all back together and I just said I'd run it till it pops. It still has great tyres, new brakes etc and looks perfect.

Anyway, a month later (light still on) the fog comes in real bad and I'm off to the gym. I put the, fog lights on and the engine warning light disappears!

Hasn't been on seen since. It's been 4 days now. WTF?

Anyone else had that?
 
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