engine fault codes? please help

[Rg123]

hey guys ive just run the flash test and these codes came up

Code 16 - Coolant temperature Sensor voltage unstable

Code 31 - Theft Deterrent Signal missing

Im just wandering if anyone knows how to fix these faults because i have no idea how to. thanx

[TheForgotten]

theft deterrant signal missing... mine does this occasionally (sometimes the key doesn't contact properly) 5 years I haven't had reason to fix it

coolant temp sensor i'd look at wiring and connections first, make sure it's contacting properly, change sensor if needed (long process but easy work)

if none of that works, i have no idea what to do next

[hako]

Probably best to clear the codes (pull engine fuse for 30 secs) and then check again in a week.