mannelito

This happened to me with my previous car, a S4. Virtually every warning light went off, even the steering went limp. Just like you, I stopped, shut off the engine, waited for 2 minutes, then started up and all was fine. I took it to the dealer and it never happened again.

hookooehoo

our Q5 was doing something similar a couple weeks ago. Same Lights, would cut out, get all lumpy and jerky. Turn the car off and it would be fine for 20 miles or so then start back up. It ended up being a bad ignition coil, could not pin point which one as every time i scanned the computer the misfires were jumping around, so i changed all 6 coils and the plugs. Runs smoother and better then when we bought it. I think we had one starting to go when we bought it and it finally just kicked the bucket. Super easy job to do by yourself. I had all six plugs and 6 coils changed in about 20 min. my local VW dealership had the right coils and for only $25 a piece, where the parts house wanted $63 a piece for the same coils. Also changed plugs over the E3's. All said and done about $180 plus my time doing the labor.

adanow

My Q5 2011 model had the EPC lights on. On Diagnosis, the timing kit and crankshaft was changed. After testing, the lights were still coming on after about 30 minutes. The oil has been flushed out using flushing oil to ensure no oil blockages. We are not sure if this will clear the problem. How can i be helped?

Dramos_30

Hey guys, I own a 2011 Audi Q5. I had my CEL come on a few days ago. The next day the EPC light came on and it started shaking when I gave it gas.
I got it checked and the code was a P2403, which is Evaporative Emission System Leak Detection Pump Sense Circuit/Open

Read more: https://www.autocodes.com/p2403.html

What do yall think?

DennisMitchell

My two cents...

First check, is your gas cap loose?

Did you have more than one code? You have two lights come on different days. Codes can trigger other codes as well.

Dramos_30

Thank you for your response! Yes, I double-checked that. The P2403 is the only code that showed up when I got it checked.

Nemanja J

Hello everyone,

im having the same issue happening to my Audi A3 2012 S line 1.4 TFSI manual
the EPC light comes on at random times, sometimes followed by CEL light as well
the car goes into complete lockdown, and I can’t do anything. Have to pull over and turn off the car and pray it won’t come on again.

anyone had any solutions so far?

4ttroMeemz

I hope someone can help. I have a 2009 Q5 3.2
i started having a rough idle, after about a week or two, check engine light came on. Brought it to audi.
i had misfires on 1, 3 ,6. So the spark plugs/ coil packs were swapped, still misfire on 1 and 3. Fast forward, i eventually get all 6 spark plugs, coil packs, fuel injectors all changed. They never changed the valve cover gasket, and told me it was optional. I feel like they should have changed it considering the dam manifold was open, it would have made sense. Anyway, after all that, i still get misfire cyl 1 and now 4! And a code that said "hide cylinder" (i forgot the code)
Someone told me it could be a leak. So i replaced a cracked hose located behind the manifold, closer towards the windshield area. It's like a 3 or 4 prong hose set.
misfire on 1 and 4 continue and now EPC light is on. It feels like it is going to run out of gas.
i can shut off the car off, wait a min or two and the EPC light goes off.
brought the car back to audi, the mechanic was determined to figure out what the problem is..Performed compression check, everything was within spec except for cyl 1. Finally he found excessive wear on cyl 1 camshaft lobe and rocker roller which is causing a gap between camshaft and valve and not sending enough air to piston which causes the misfire. But doesn't recommend i bother fixing it because it could be a 50/50 chance that is the cause of problem.
i know this was a lot, but please,
SOMEONE..... ANYONE....HELP! Any info would be soooooo helpful

joe1boss

Which Cam shaft actuator sensor did they replace?

silver_tt

The poster gave the part number already. It’s #14 in this illustration, it’s about a $50 part: