by Andrew Fowkes | Nov 6, 2020 | Workshop
This BMW 3 Series E90 / E91 had the very common N43 engine. It ran rough and had an obvious mis-fire when cold. Stored trouble codes were as follows: 30EA DeNox Catalytic Converter, Sulphurous 29CD Combustion Misfires, cylinder 1 29D9 Misfire at low tank fill level...
