tildahartmann1
Seat Toledo engine light and fuel consumption issue
Summary of the thread
A 2018 Seat Toledo with a diesel engine exhibited a check engine light and increased fuel consumption. The OBD scan indicated a potential issue with the inlet VANOS mechanics. A faulty camshaft solenoid valve was identified as the cause, which is a common problem in such cases. Replacing the solenoid valve resolved the issue, turning off the check engine light and normalizing fuel consumption.
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4 comment(s)
tildahartmann1 (community.author)
Did you have the same error codes? Was it difficult to diagnose? I'm wondering if it could also be related to the timing chain, though the car isn't that old.
lara_moeller4
The error codes were similar. Ruling out the timing chain is wise, but at that mileage, a VANOS solenoid issue is more plausible. I suggest having the solenoid valves inspected by a workshop. It's a relatively straightforward diagnosis with the right equipment.
tildahartmann1 (community.author)
Took it to the shop. It was a faulty camshaft solenoid valve, just like you said. A new one was fitted and the check engine light is now off. Fuel consumption seems back to normal. Cost me around 250€. Thanks for the help!
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SEAT
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TOLEDO
lara_moeller4
VANOS failure on these engines is not uncommon. The check engine light and increased fuel consumption align with typical symptoms. Have you checked the camshaft solenoid valves? A defect there, or a power supply issue to them, could be the culprit. I experienced a similar issue on my Toledo.