156 jts p0154 error. motor circuit error
hey guys, I'm new so please be gentle.
I'm new to alfa's but no stranger to high maintenance cars.
right. Only had the car a month, 2003 jts with 53k miles.
I have the multi circuit error coming every week or so sometimes upto 2 weeks. I have fiat ecu scan (free version at mo)
get p0154 lambda 2 signal above catal
so, I did some logging.
engine temp 78 degrees c
lambda 1 signal pre cat 2.13 - 2.179 fluctuating -open loop
lambda 2 signal pre cat 1.512 steady -open loop
lambda 1 signal after cat 0.030 steady -open loop
lambda 2 signal after cat 0.226 steady -open loop
mass air flow 2.7 kg/h
air quantity 15.3 kh/h
Battery volts running 13.93 engine off 12.04
Car runs fine, idles fine, just annoying when light comes on and buzzer scares you at 05:30am!!
I'v read a few things about low battery volts , bad wiring connectors... Do my readings help with anything?
I do have a slightly bodged intake pipe, rubber pipe sealed up. I am going down the v6 mod road but would an air leak cause the duff signal from lambda?
Any suggestions appreciated.
I did strangely find a new lambda sensor in glovebox when I purchased :/
It's in an alfa specialist in couple weeks for a cambelt and service but I'd like to have this sorted so attention can be paid elsewhere