STOP:The answers to some of the questions are located in the comments. Also, if you do not see the information you seek in the first post, be sure to use the "Archive Categories" list in the left column or the search bar above.
Saturday, January 17, 2009
1996 Mazda 626 Code P1407
1996 Mazda 626 2 litre engine is showing just one code of P1407 with no symptons other than the check engine light is on. Any thoughts it was not listed in the book at the oil change place where they read the code. Thanks Ken
P1407 refers to an EGR system no flow condition / EGR valve inop or stuck shut. First check for the obvious vacuum hose connections to the EGR system ( Exhaust Gas Recirculation). Next look for a computer recalibration label as there is a dealer fix for this code with updating software. The vehicles have a problem with moisture in the EGR vacuum lines freezing in code weather and therefore rendering the EGR valve inop. You could also have and actual fault that will have to be diagnosed with the proper information and tools. As a bit of comfort this is an emissions code and will not cause the engine to stop running. It will however slightly affect fuel mileage, you could pick up some spark knock on acceleration and you will fail an emissions test.
1 comment:
Hi Ken,
P1407 refers to an EGR system no flow condition / EGR valve inop or stuck shut. First check for the obvious vacuum hose connections to the EGR system ( Exhaust Gas Recirculation). Next look for a computer recalibration label as there is a dealer fix for this code with updating software. The vehicles have a problem with moisture in the EGR vacuum lines freezing in code weather and therefore rendering the EGR valve inop. You could also have and actual fault that will have to be diagnosed with the proper information and tools. As a bit of comfort this is an emissions code and will not cause the engine to stop running. It will however slightly affect fuel mileage, you could pick up some spark knock on acceleration and you will fail an emissions test.
Sparky
Post a Comment