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Digital Fuel Quantity Indicator Error Codes
Error Code
Fuel Quantity Indicator Reading
Probable Cause
0 Zero, Missing or disconnected tank unit
1 Normal, Tank contamination
2 Zero, Bad HI-Z lead
3 Normal, Bad compensator unit wiring
4 Zero, Bad tank unit wiring
5 Normal, Bad compensator unit
6 Zero, Bad tank unit
7 Normal, Contamination/water in compensator
8 Zero, Bad fuel quantity indicator
9 Normal, or zero Improperly calibrated indicator
. Blank, Bad fuel quantity indicator
Sorry about the loss of formatting but basically with odd error codes the gauges continue to indicate normally, but with even error codes the gauge will indicate zero.
To add to spanners excellent post, if the fault means that the gauge indicates blank, then common sense dictates that you should not go, but check the fine print in the MEL.
S & L