Citroen Xsara 2001 1.6 NFU - High lambda reading, new sensor fittedArchived Message
Posted by Chris Angus on October 10, 2006, 12:44 pm
Does anyone know if these suffer with ecu\programing problems. Originaly had a faulty lambda sensor with no output and high co off the scale. New sensor fitted and although the co has come down a lot the output from the o2 sensor is pegged at 0.9 at idle and cruise. no fault codes and live data seems to be bang on. fuel pressure is dead on according to autodata at 3.5 bar, if i reduce the pressure to 1.5 bar the o2 switches perfect. Autodiagnos doesn't show the fuel trims and hasn't got a reset adaptions, I was thinking this may be the problem due to the old o2 sensor. Anyone got any ideas??