Hi
I have a 2012 A5 Convertible, bought around 6m ago and recently started showing a few dash error messages. The EPC light comes on when starting from cold, but on 2nd start it doesn't. Also started getting intermittent light system malfunction errors. My gut feeling was that the battery needs replacing, but bought an OBD Eleven out of curiosity. Not sure how to interpret the various errors, hoping someone here can provide some guidance :
Central Electrics
01626 & 01628 - Front parking aid sensors open circuit
01496 - Fog light open circuit
03384 - Window washer nozzle circuit error
Doors
02123 - Driver door error in circuit
Engine
PO19000 - Fuel rail pressure sensor A Circuit
P003000 - O2 sensor heater control circuit
U044700 - Invalid data received from Serial Data Gateway
Climate
03220 - Climatronic refrigerant short circuit B+
Generator
02252 - Generator no signal
Seems a lot, but mostly circuitry, so wondered if that backed up my theory of low voltage issues & new battery?
TIA
Sam