Wondering if anyone has any advise on these errors. It seems to be causing my car to stall when I start the engine. Also at times, my engine will die in the middle of a drive (when idling @Traffic lights)
My is a 2007 Bravo 1.4T. thank you.

P1171- Mixture 1 strength (additive)
P1135-Preheating resistance 1 above catal
P0130-Lamba 1 signal above catalyser


any advise. thank you.

points to the first lambda sensor (pre-cat)

have you possibly used any dodgy fuel recently or non-approved oil?
when was car last serviced? plugs need to be changed every service