[smokedoggg]

i have a astra mk 3 1.8 gsi. a message on diplay constantly reads coolantant level but there is water in the system and is not over heating . is it a faulty sensor or is there something else wrong

 

[Jimbo Jet Set]

The sensor on the header tank cap could be faulty

 

[Stevie Bre]

:bananasmi The float in the header tank gets pourous. If you want a quick fix, just open the cap (when cold):crying_2: and stick a tie wrap around the float to keep it in the up position