Audi A4 2.0T FSI B7 Manual.

Before this happened I had no codes and the car ran perfect. I drove the car yesterday and about 1 mile into my journey I lost most power and the engine is running very very rough. I only drove it at 30MPH before this happened. I have the engine check light flashing.

I scanned for fault codes and got all of these together. P0299, P2181, P2309, P0300, P0304 fault codes

What can cause all these codes together? What should I check for first?

 

Thanks

Edited March 7, 20242 yr by Andy A

Thanks Jasonj for your time and help.

It was number 4 on your list. a bad coil.

I got a new diagnostic tool and it showed number 4 cyl and the counts of misfiring on that cyl. The misfiring count just kept going up. I swapped the ignition coil from cyl 4 to cyl 1  and the misfire count shifted to cyl 1.

Fitted 4 new Bosch ignition coils and rechecked on the scan tool, no more misfires detected and all fault codes have disappeared/gone.

I put the 3 old working ones in the boot with a small tool kit for next time.

For any one reading this that are short for cash you can just change the bad one for a new one although the others are just as old so it's good practice to change them all once confirmed the coil pack is faulty.

 

Thanks again

Edited March 10, 20242 yr by Andy A