My recently purchased Pathfinder suddenly developed stalling at low revs / idle in slow moving traffic or at traffic lights etc. It would start again each time with some revs but progressively the stalling became too regular and dangerous. I had the AA out who diagnosed a malfunctioning Throttle Position Sensor. I replaced that (10min job) and had the ECU accept the replacement. An hr in and the stalling returned!!...Spoke with my very learned 4x4 mechanic who had come across this situation across other vehicle brands before and suggested I replace the Crankshaft Sensor and possibly the Camsha… Lire en entier

Engine turne but no start
No signal on the cam shaft plug
I want to know why the engine does not sart

I have replaced all 4 O2 sensors and even put the spark plug fouler on the one with issue bank 1 sensor 1. Replaced spark plugs and replaced camshaft sensor however the code p0420 comes back. I thought I cleared it and it didn't come back when I fixed it and cleared it I got back code for camshaft sensor so I replaced it cleared code for camshaft and then code comes back for p0420 stuck don't know what else to do except replace catalytic convertor