Possible water in relays
 

Hey all so, I have a 2007 A4 2.0T. The cover where the relays are is cracked and I didn’t notice before it was too late. I noticed when my fan would come on after the car was shut off, then my engine light and epc light came on. These are the error codes I’m getting, can anyone guide me in what I can do and what I may be looking at as far a cost or whatever. I’m pretty green so may just have to take it to a shop but if it’s just replacing relays then idk. P0659
Raw code: 0659
ECU: Engine control unit
Status: Pending
OBDII: Actuator supply voltage - circuit high

============2==============
P0444
Raw code: 0444
ECU: Engine control unit
Status: Pending
OBDII: Evaporative emission (EVAP) canister purge valve - open circuit
Audi: Evaporative Emission Control System Purge Control Valve Circuit Open

============3==============
P0243
Raw code: 0243
ECU: Engine control unit
Status: Pending
OBDII: Turbocharger (TC) wastegate regulating valve A - circuit malfunction
Audi: Turbocharger Wastegate Solenoid 1

============4==============
P2400
Raw code: 2400
ECU: Engine control unit
Status: Pending
OBDII: Evaporative emission (EVAP) leak detection pump, control - open circuit

============5==============
P0030
Raw code: 0030
ECU: Engine control unit
Status: Pending
OBDII: Heated oxygen sensor (HO2S) 1, bank 1, heater control - circuit malfunction
Audi: HO2S Heater Control Circuit Bank 1 Sensor 1

============6==============
P0037
Raw code: 0037
ECU: Engine control unit
Status: Pending
OBDII: Heated oxygen sensor (HO2S) 2, bank 1, heater control - circuit low
Audi: HO2S Heater Circuit Low Voltage Bank 1 Sensor 2

============7==============
P2295
Raw code: 2295
ECU: Engine control unit
Status: Pending
OBDII: Fuel pressure regulator 2 - circuit low

============8==============
P0135
Raw code: 0135
ECU: Engine control unit
Status: Pending
OBDII: Heated oxygen sensor (HO2S) 1, bank 1, heater control - circuit malfunction
Audi: HO2S Heater Performance Bank 1 Sensor 1

============9==============
P0130
Raw code: 0130
ECU: Engine control unit
Status: Pending
OBDII: Heated oxygen sensor (HO2S) 1, bank 1 - circuit malfunction
Audi: HO2S Circuit Closed Loop (CL) Performance Bank 1 Sensor 1

I have an 07 A8, and the ECU is fairly easy to access, so I would disconnect the battery cables, disconnect the ECU, open it and dry it if it's wet. A hair dryer and just having it indoor will dry it.

Interested to hear what you did.