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Mercedes G Klasse Check Engine Light and Fuel Consumption

My 2003 Mercedes G Klasse with a gasoline engine, around 70000 km, just triggered the check engine light. Fuel consumption is also way up. Is the inlet VANOS a possible cause? Could a bad camshaft solenoid valve or its power supply create these issues?

A 2003 Mercedes G Klasse with a gasoline engine experienced a check engine light and increased fuel consumption. The potential causes discussed include a faulty inlet VANOS solenoid, a bad camshaft solenoid valve, or issues with its power supply. A similar issue in another vehicle was resolved by addressing the VANOS solenoid. The problem was confirmed and repaired by a mechanic, resolving the issue.

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4 comment(s)

Check engine light and high fuel consumption? I had a similar issue with my old BMW 5 series. Oil sludge was messing with the timing chain.

Oil sludge? How did you figure that out? Was it definitely the VANOS solenoid? I'm not comfortable tearing into the engine myself.

It was the VANOS solenoid. A mechanic diagnosed it. If you're not experienced I'd take it to a workshop. Could save you problems.

Thanks, I took it to a mechanic and you were right, it was the VANOS solenoid. They mentioned a faulty valve or a power supply issue as possibilities. The repair cost 250€. Thanks for the advice!

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MERCEDES

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GKLASSE