Our Review/Thoughts

It's not much better than a cheap cigar-lighter plugin test light, but it's right there

I have never yet encountered a need for this, but it's definitely important to have available when you have a troublesome intermittent problem

The 3040c I have does NOT claim to support ANY SRS codes--a reader that does costs at least twice as much

This is the least-expensive one I found that displays ABS data for my beloved 2004 Chrysler 300m

It is handy to let you know if these two components are relatively OK, but you need a real high-current load tester to get an accurate result

Each code is displayer with its clear definition, so there's no need to look up the number in a book or online

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