A loose gas cap. A faulty oxygen sensor. Bad spark plugs. A faulty mass airflow sensor. A check engine light that turns on and off intermittently is not uncommon. If the check engine light turns on and then off, it is possible that the main computer is not correctly registering the problems.
Garage suggests it could be £1000 to £1500 to replace, this is due to them saying it's around 8 hours labour, and if there is debris in the oil, they would want to change the oil, filter and clean the engine etc. This makes sense, and I've seen other things online suggest that it can be up to 12 hours labour.
Ford Model: Focus. Ford Year: 2011. UK/Ireland Location: Surrey. Posted June 14, 2020. Hi. Just had the yellow warning light come on the dash and I have a very basic OBD11 reader that read the fault code P0400 EGR flow malfunction. Can anybody please tell me is this serious and is it an easy fix?
I started by having my cruise intermittently not working, and replaced the break light switch with no avail. On Thursday, mid drive to north wales, my car came up with an engine fault, 'engine malfunction service now' amber light. I lost some 'umph' id say to the engine, so drove
468K views 4 years ago. In this video, I'll show you how to reset the Engine Malfunction Warning Message on my 09 Ford Focus. This simple procedure is similar to one demonstrated in the link
Frayed, loose or wet wiring harness at the EGR solenoid. Damaged powertrain control module. After inspecting the fault circuit, check each of these components for any signs of visible damage, any loss of voltage or excessive resistance. Each of these could also cause trouble code P0403 or related trouble codes in the P0400 range, such as P0401
