I don't know, went and got my last scan the full error message is 16500 - Engine coolant Temp Sensor G62 Implausable Signal P0116 - 92-00 Unknown Error Elaboration.
Does the ECM compare this signal to any other signal, like transmission temp, or oil temp and look for a difference? I can't really find a decent description of the error. I'm used to US cars which have a decent diagnostic tree that says exactly what causes this error to be set, but I can't find any such info for the Audis. I think the 92-00 coding means the output from the sender is not what the ECM is expecting. 35-10 is the code for an intermittant problem so I don't think its a wiring issue but you never know.
Guess I'll pull the cover off the ECM and try cleaning up the contacts this weekend. May have to do a thermostat though.
Last edited by Mark C; 11-16-2010 at 08:44 PM.