3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
I Need help ASAP guys, I gotta smog my car but first I gotta get my check engine light shut off. I ran the computer on it, and error code [P1470 -Auxilary Emission controls] came up. Does anybody know exactly what this is and how i can fix it? ANY help appreciated, and thanks to everyone on this forum for being so helpfuL!!
Thread from Bimmerforums
P1470 Leakage Diagnostic Pump Control Circuit Electrical
I finally found the leakage diagnostic pump in the rear fender well. I had to remove the driver rear wheel and inner fender to expose the critter, and there is was, attached to a fuel evap canister. The insulation on the wiring to the pump had been damaged due to chaffing, so it was an easy fix to replace the old worn through wires.
So before i tear my car apart- what year is yours? I have a 2000 328i, and is there any significance in the difference of the descriptions of the codes? The computer said Auxilary Emission controls after reading the cars computer. What leakage diagnostic pump control circuit possibly be the same thing cuz it seems like it.
johnny's problem isnt a common one....sounds more specific to his car.
your fault is very general, could be a lot of things. Could be a bad DMTL pump or possibly could be a small leak in the evap system. Getting the faults read with some better software may help to give you more direction.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.