I have problem with my polo, in the morning when I start the engine he does not want to start, also rought idlle, today when I pressed accelerate stationary engine stalling around 1-1.1k rpm, Check engine+epc .
I've changed S1 lambda probe.
This is vcds test:
P1425 Tank Vent Valve Short to Ground
P1553 Barometric/Manifold Pressure Signal Ratio Out of Range
P1504 Intake Air System Bypass Leak Detected
Sometimes it appears also S1 and S2 lamda probes( short to ground) A lot of short to ground problems, but they are fine( s1 and s2)