Questions & Answers for: p0400 check engine light

check engine light. Is the fix for the P0400 the same as for the P0401? Do I follow the same procedure (multimeter & vacuum pump)? What is the P00A0 code? I can't find any reference anywhere. P00A0 is

...SE has check engine light one, problem codes are 400 & 500 - what is the repair procedures?Sonja P0400 is auxillary emmisions control and P0500 is vehicle speed idle speed control auxiliary

Check engine light comes on,now is staying on.Code reads P0400.I have been told what the code means but need it narrowed down;I do have a leak in my gas tank on top.Should this be the problem.Just ...

check engine light and p0400 code I need engine vacuum hose diagram where can I find it ? thanks go to your local auto parts store and get the repair manual for your model car. It will tell how to fix

...p0400. Was told by Advance auto it was a bad egr canister solenoid. Replaced it but still have check engine light on. How do I get it off? After you have made the repairs go back to Advance Auto and ...

...check engine light started to light once again.I took it to the workshop back but he could not help me in solving the problem.What shall I do. A code P0400 may mean that one or more of the following ...

...check engine light is on and I have a 97 Geo Metro Lsi...I took it to AutoZone to get it checked out and the test said P0400 and P0420. Please tell me what do these things mean? ...

...check engine light is on seems to run normal what to do? P0400 - Exhaust Gas Recirculation Flow Malfunction The exhaust gas recirculation (EGR) valve is vacuum controlled valve that regulates the ...

...check engine light came on and after i had it checked the codes p0400 and p1333 showed up in the computer P0400 (EGR flow malfunction),  P1333 Make sure about this code its a chevy code so you ...

...p0400 refers to exhaust gas recirculation(EGR) system---flow malfunction.===causes---hose leak/blockage--basic setting not carried out (if applicable)---wiring---EGR valve ---EGR solenoid---ECM check ...