Eco button possible problem

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March 20th, 2022, 3:17 PM

dragonslyr369

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Eco button possible problem

I have a 2015 Equinox LT and I'm getting codes P15A1 and P159F. Both have reference to the Eco button. Any solutions?

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March 24th, 2022, 9:41 AM

Don Palmer

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Those 2 codes together usualy indicate high resistance. Measure at switch power, terminal 3 to signal, terminal 4 (266 - 294 ohms). Terminal 3 to Ground Terminal 1 (1914 - 1562 ohms). Button depressed: termiinal 3 to Ground terminal 1 (486 - 538 ohms).
Any out of range, replace switch.