Question about 1994 Volvo 940

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Check engine codes

My check engine light came on. I checked the computer, and it gave me a code of 1-2-3. I just need to know what that code means. I have a 1995 Volvo 940 turbo.

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  • laughalot Jan 06, 2009

    Check engine light is on also. Car is running fine, but don't want to do damage. Help?

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  • 216 Answers

1-2-3* Signal missing to/from coolant temp. sensor Wiring fault to or in ECT sensor;grounds corroded on intake manifold or engine Difficult to start engine when cold Same Same

Posted on Jun 22, 2009

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Posted on Jan 02, 2017

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Check engine light


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