mohanlal

I have the same P0202 error code with my Citroen C5. I bought an OBD2 reader from ebay which can erase this error code and make the engine service light go away. The car then works fine but unfortunately P0202 keeps coming back after a few days. One thing you could try is buying injector cleaner. The cheapest one branded STP costs about £2 from Halfords. If that doesn't work you may need to change the injector - I was quoted about £150 for a garage to do this. I know how to change the injectors but does anyone know how the injectors are numbered? P0202 must be for the second injector but do you count the injectors from left to right as 1 to 4 (as you look at the engine standing from the front)? If so, P0202 would be the second injector from the left as you look at the engine standing from the front. Please could someone confirm this.