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Forum > Emissions Component > Question

Volvo 940 Failed Because the Check Engine Light was On

I have a 1994 Volvo 940 2.3L turbo. In California, how old does a car have to be in order to pass inspection with an illuminated "check engine" light. I was under the impression that it was 1996 or earlier.

Answer:

In California regardless of a vehicle's age, the check engine light is inspected if the vehicle is equipped with one. The difference between an older model Volvo (1995 and older) and a newer model is that on a 1996 and newer vehicle the engine's computer relays check engine light data to the smog machine via the OBD II data link connector. On older OBD I models there is no data link connector. The technician visually observes the check engine light for illumination and enters this information on the smog machine. Subsequently a vehicle with its check engine light fails the smog test. posted by SmogTips Support

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