Question about 1998 Volvo S70

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Electronic Ignition Fault Light On

My Volvo S70 T5 got a fault light latched on. The fault light, from the owner's manual, means 'There is a fault in the electronic engine ignition system'.

What's the likely cause of this fault? Can I reset the light by myself?

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  • 155 Answers

It is probably due to a faulty sensor somewhere, but without proper diagnostic equipment it is virtually impossible to tell which one.

A modern fuel injected engine will have sensors to monitor throttle position, manifold pressure, coolant temperature, air temperature, crank speed, camshaft position, exhaust gas oxygen, pre-ignition, etc, etc, etc.

Diagnostic equipment will be able to read the fault code from the vehicles computer and tell you where the fault lies.

The light cannot be reset manually. It will go out once the fault has been rectified.

Hope this helps!

Posted on Jun 20, 2009

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Posted on Jan 02, 2017

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