walter_sky18
Vectra VANOS Faulty Solenoid
Summary of the thread
A 2003 Vauxhall Vectra diesel with 167,049 km was experiencing a check engine light and increased fuel consumption, potentially linked to a VANOS issue on the inlet camshaft. The problem was suspected to be a faulty solenoid valve or a power supply issue. After diagnosis, it was confirmed that the faulty solenoid valve in the inlet VANOS was the cause, and repairing it resolved the issues, turning off the check engine light and normalizing fuel consumption.
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4 comment(s)
walter_sky18 (community.author)
Engine does feel a bit rough at idle sometimes. I did get it scanned, and it pointed towards a camshaft position sensor issue. But could that be a symptom of the VANOS problem rather than the root cause itself?
alfredjones6
A camshaft sensor issue could be related. But honestly, with those symptoms and the code, it really does sound like the VANOS is the culprit. Have you considered getting it checked by a reputable workshop? They can diagnose it properly and give you a definitive answer.
walter_sky18 (community.author)
I took it to a local garage, and you were spot on – it was a faulty solenoid valve in the inlet VANOS. Repair cost me about 250€. The check engine light is now off, and the fuel consumption seems to be back to normal.
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VAUXHALL
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VECTRA
alfredjones6
VANOS on a Vectra? Not something you hear every day! Is the engine running rough, especially at idle? Have you had it scanned for any specific fault codes? If it's the inlet VANOS, it could definitely cause those symptoms. Is the car down on power too?