Saab Problems? Ask a Mechanic for Answers ASAP
Hello, my name is***** code is related to the ECM power relay so I'd start by replacing that relay, checking pins for being wet and after that you will need to check wiring going to the relay. Let me know if you have more questions or if there is anything else I can do to help. Thanks.
It is located in fuse box that is located in front of battery, it is labeled "engine control system main relay". Let me know, thanks.
There should be a diagram somewhere on cover with relay label.
I found diagram, here it is.
This means voltage is low, other diagram meant voltage was high. I think it is possible new relay is problem, see if parts store will swap it out with another one. Let me know, thanks.
Still keep getting the P0686 code? Next step will be testing wiring.
Good to hear they only took off $500, that seems reasonable. In the future make sure to never pressure wash an engine again. If anything, use a wet rag and wipe off the engine. Let me know if you run into more questions, thanks.