have a Citroen C4, 1.4 Petrol, 2004. Car turns off while driving, then it does not start. Not even with push starting. Then after some random time (20 min to 1 hour) it starts again. The engine warning light is on, and the screen reads "Anti-pollution system faulty".
This is done by pushing or pulling taking care not to damage it. Replace the switch by pushing it into the hole and rotating clockwise 90 degrees. turn on ignition and check that the brake lights work, if not the switch plunger might not be set to the correct length. hopefully now you wont have the esp /abs warning.Contrary to local garage diagnostics Taunton Citroen diagnosed a sensor fault rather than pump failure. They say the sensor believes ad blue temperature is -40 C and won’t inject as it believes it’s frozen… They past report to Citroen U.K. who have offered 42% contribution to parts cost. ONLY. NO Labour.Location: Hoylake. Yes, a micro switch on the brake is a very likely culprit, though also check one on the clutch. If the beep and the appearance of SERVICE co-incide with using the control switches on the steering wheel, try cleaning the switch with a small squirt of switch cleaner, then rock the switches up and down for several seconds and
