Treat as urgent. If gas or CO is genuinely suspected, ventilate, get out, and don't operate switches or naked flames.
What it means
The engine isn't getting properly lubricated. This is more urgent, not less, in a motorhome - the extra weight the engine is hauling makes any oil-starvation damage happen faster.
What to do
- Stop as soon as it's safe to do so and turn the engine off.
- Check the oil level once safe (engine off, on level ground) - but don't restart the engine if the light stays on.
- Arrange recovery rather than continuing to drive.
Likely causes
- Genuinely low oil level
- A failing oil pump
- A faulty pressure sensor (less common, but possible)
Rough UK cost
Recovery and diagnosis vary; engine damage from ignoring this light can run into thousands.