Hello,

I'm having an issue with the CODES:
(ECM-21EC & ECM-212C Long-term fuel trim, bank 1 : Signal too high)
on 2005 S60 2.5T -> B5254T2

I had the breather hose cracked and replaced, I removed the intake system too and dis-assembled and cleaned the entire oil trap system + used new clamps too. It was a bit caked in the pipes going into the engine, but not clogged or that bad at all... Before this procedure i was noticing a lot of oil in the turbo when I took the charge pipe coming off the turbo and going into the front mount intercooler... I checked all the hoses coming off the turbo and none were worn/cracked. I'm getting 17L/100KM ((13.8MPG))
(But I Should be at -/+ 10L/100KM [[23.5 MPG]])

The hose that goes Beside the "Banjo Bolt" under the intake was also cracked/broken. I replaced both the Maf and Upstream O2 with the exact same part numbers as OEM , fuel pressure sensor(on fuel rail) ,fuel filter, spark plugs(Iridium), and new muffler (it corroded and caved internally causing clogging. I also removed the throttle body and cleaned it, the car started to die after a few seconds on cold starts. when the car is at idle, there needs to be about 1% space around the throttle place for air to get by. since mine was a bit caked, the car would die out.

I had a professional mechanic replace the timing belt+water pump as well.

Cleared the codes using VIDA tonight, and the light comes back on in 50 KM or so. Currently at 160,000 KM with new air filter added to the list, but check engine light keep throwing this code. I cleaned the 2 connection that connect the 02 sensor and maf sensor with electrical contact cleaner as well just for the heck of it too. I running out of things to check here...

I would appreciate any input from anybody.

Thank you everyone

I have access to the VIDA software as well....

 

I did a fuel pressure test from the rail and I was getting 20 PSI after startup. From what I've found online, it should be more like 50-55 PSI. I'm guessing the fuel pump is on the way out.