The capacitance gauges and amber warning sensor are within two concentric tubes. With the presence of a small amount of water they will fail together, hence the AD.
The red low warning sensors are located in a completely different place, and are of a thermal type so not as susceptible to contamination.
It would be highly unlikely that two types of sensors in 4 different locations would fail at the same time.
Last edited by PieChaser; 18th Jan 2014 at 09:34.
Reason: Dyslexic