Posted by Lee MackintoshLee Mackintosh
on February 8, 2011, 9:51 pm, in reply to "Ford Focus 1.6 P0135 O2 Heater Circuit reocurring "
is it an 02 sensor fault or a fuelling issue. I've had a focus before where one of the injectors leaked and caused an 02 sensor code and P0171.
i connected up a fuel pressure tester which shown a fast pressure drop with the engine off adn igntion off.
