CEL after refuelling - possible reasons?

[Hrimfaxi]

After fueling up earlier, the CEL popped up. Maybe it felt Christmassy and wanted to light up, bless it...

The car was about 1/5th full and was Shell V-Power, any possible reasons? It ran fine still, will get my reader on it tomorrow.

[GravelBen]

Wrong fuel? Could happen by accidentally using the wrong pump or because a tanker driver put low octane fuel in the wrong tank. Or just a bad batch of fuel.

I had similar happen with a turbo MX5 after topping up at a small rural fuel station once, knock detector lit up like a christmas tree until I turned the boost well down. Was back to normal with the next fill.

I'd take it easy and try to stay off boost in the meantime anyway.

[Hrimfaxi]

Sounds plausible! I did give it a little burst of acceleration, just in case it was ignition related. It hardly hit boost though - so if this is the case, it should be fine and I'll take it easy. Or until I can get my reader on it.


Wish I took a receipt of the fuel now though, but I so often don't.

[Konan]

What car?

[TEKNOPUG]

What's the CEL code?

[ndtman]

Fuel cap not on properly? Have read that some cars monitor for a closed system and with the fuel cap leaking shows an open system.

[wolfie28]

As GravelBen has mentioned could be a bad batch of fuel if you filled up with V Power. My car played up when I used a particular Shell garage. Use a different Shell garage now and thankfully the car has been fine.

[Smiljan]

ndtman said:

Fuel cap not on properly? Have read that some cars monitor for a closed system and with the fuel cap leaking shows an open system.

I'd go for this first, check the seal too.