» Site Navigation | | » Recent Threads | | My 318ti build 05-21-2024 04:48 PM 05-28-2024 06:42 PM 1 Replies, 2,025 Views | | OMG!OMG! 05-28-2024 08:53 AM 05-28-2024 08:53 AM 0 Replies, 458 Views | | | | | | | 01-21-2010, 05:56 AM | #1 | Senior Member Join Date: Apr 2007 Location: Auburn, WA Posts: 1,814 | CEL code P1174 hey so i keep getting this code P1174 - Fuel trim adaptation additive bank 1 malfunction, i have search in couple places and some people said is the 02 sensors so i replace the 1 before the cat a week ago and the light came back on, also around 2 years ago i replaced the 02 after the cat and the cam sensor so idk what else is wrong with this car any other ideas? __________________ 5/96 318TI Sport BIG TURBO | | | 01-21-2010, 10:08 PM | #2 | Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 | Quote: Originally Posted by Jean H.318TI hey so i keep getting this code P1174 - Fuel trim adaptation additive bank 1 malfunction, i have search in couple places and some people said is the 02 sensors so i replace the 1 before the cat a week ago and the light came back on, also around 2 years ago i replaced the 02 after the cat and the cam sensor so idk what else is wrong with this car any other ideas? | You running tweaked firmware on your DME?? I get that all the time. Marko too.... If you are on modded firmware I will explain Edit ~ I take that back. Let's talk about this. Do you have a wide-band on the car? Last edited by xxxJohnBoyxxx; 01-21-2010 at 10:18 PM. | | | 01-21-2010, 11:42 PM | #3 | Senior Member Join Date: Aug 2006 Location: Central NJ Posts: 2,440 | I think he's running stock M44 right now. I think that code can come up if you have a vacuum leak too, so check all your hoses. I personally hate the 4 to 1 fuel injector vac line. | | | 01-22-2010, 07:24 AM | #4 | Senior Member Join Date: Apr 2007 Location: Auburn, WA Posts: 1,814 | Quote: Originally Posted by xxxJohnBoyxxx You running tweaked firmware on your DME?? I get that all the time. Marko too.... If you are on modded firmware I will explain Edit ~ I take that back. Let's talk about this. Do you have a wide-band on the car? | nah stock 02 sensors with stock ecu well with the DINAN software but is the first time i got this code so idk, i did something today so i have to drive for couple miles and see if the light comes back on __________________ 5/96 318TI Sport BIG TURBO | | | 01-22-2010, 08:33 AM | #5 | NOBODY F's with the Jesus Join Date: Oct 2006 Location: Ventura California Posts: 7,824 | Hey Jean, I had that same code a while back when my post cat 02 sensor got broken off from running over a chunk of ice. You might look under there and check the wires, I know you said you just replaced it, but something may have happened to the wires or it might be defective. Did you use an OEM Bosch sensor? Also, you may already know this but the code will remain stored even when the CEL goes out unless you physically clear the code with a scantool. Best of luck man, don't cheap out with o2 sensors, make sure you buy a Bosch OEM, not the universal ones that require splicing wires and such. | | | 01-22-2010, 08:51 AM | #6 | Senior Member Join Date: Apr 2007 Location: Auburn, WA Posts: 1,814 | Quote: Originally Posted by cooljess76 Hey Jean, I had that same code a while back when my post cat 02 sensor got broken off from running over a chunk of ice. You might look under there and check the wires, I know you said you just replaced it, but something may have happened to the wires or it might be defective. Did you use an OEM Bosch sensor? Also, you may already know this but the code will remain stored even when the CEL goes out unless you physically clear the code with a scantool. Best of luck man, don't cheap out with o2 sensors, make sure you buy a Bosch OEM, not the universal ones that require splicing wires and such. | Yeah I did use the oem bosh sensor and I use a scantool to read/erase the codes, all the wires and connections looks good, so I just clean the cam sensor, maf sensor, the air temp sensor and TB hopefully the light doesn't come back on __________________ 5/96 318TI Sport BIG TURBO | | | 01-23-2010, 04:36 PM | #7 | Member Join Date: Jan 2010 Location: usa Posts: 80 | I have the same fault code on my ti. All stock. I replaced both O2 sensors on a regular schedule. The engine light comes on usually after I come to a stop at a traffic light within a minute. Some times it goes out after I start the car. This is rare but it does go out on its own. Most of the time it comes back in a fairly short time after sitting at a light and idling. Sometimes it stays out for several days. I do not know what is causing it to come on and go out on its own. The pattern of the fault is very erratic. No set pattern other than it comes on after I idle at a traffic light. Any help would be appreciated. I doubt the O2 sensors are at fault. They have several specific fault codes for them. | | | 01-23-2010, 06:45 PM | #8 | NOBODY F's with the Jesus Join Date: Oct 2006 Location: Ventura California Posts: 7,824 | Just remembered something. Do you guys have secondary air pumps? If so, next time you start your car on a cold engine, stick your hand in the engine compartment and feel around the secondary air pump for leaks. You have to be quick though because the pump only runs for about 30 seconds when you first start the car in the morning. So have you hood open and be ready to run around and feel the secondary air pump. You shouldn't feel any air blowing out of it, but if you do the rivets that hold it together are probably shot which will allow the pump body to separate and leak air. You can replace the 6 rivets with nuts/bolts and the pump will function normally with no leaks. I just remembered that I did this around the same time I replaced my o2 sensors and had the same code. Good luck guys. Edit, If your car didn't come with a secondary air pump, perhaps your shut-off valve is not working: http://www.realoem.com/bmw/showparts...58&hg=11&fg=45 http://www.realoem.com/bmw/showparts...59&hg=11&fg=50 Last edited by cooljess76; 01-23-2010 at 06:55 PM. | | | 01-23-2010, 07:11 PM | #9 | Member Join Date: Jan 2010 Location: usa Posts: 80 | I do not have a secondary air pump. Build date is 10/96 for my 97ti. | | | 01-23-2010, 07:43 PM | #10 | That's not Millpoint Blue Join Date: Apr 2005 Location: BNA Posts: 3,161 | Quote: Originally Posted by 6speed ti I do not have a secondary air pump. Build date is 10/96 for my 97ti. | Same here. Now I understand why I could never find the SAP on my car. heh heh __________________ Real men know how to SEARCH! THIS IS A MILLPOINT BLUE INTERIOR Mods 'n' stuff: Star Spoke 43 wheels - X-Brace - Mason Engineering front strut brace - CF gauge overlay - ZHP shifter knob - Racing Dynamics cat-back - Doubled brake lights - M-tech rear spoiler From Page 68 of the 1997 Owners Manual: "Vehicles equipped with ASC+T remain subject to the laws of physics." | | | 01-23-2010, 09:20 PM | #11 | Senior Member Join Date: Apr 2007 Location: Auburn, WA Posts: 1,814 | yeah i dont have a secondary air pump or shut off valve and the light came back on last night Quote: Originally Posted by cooljess76 Just remembered something. Do you guys have secondary air pumps? If so, next time you start your car on a cold engine, stick your hand in the engine compartment and feel around the secondary air pump for leaks. You have to be quick though because the pump only runs for about 30 seconds when you first start the car in the morning. So have you hood open and be ready to run around and feel the secondary air pump. You shouldn't feel any air blowing out of it, but if you do the rivets that hold it together are probably shot which will allow the pump body to separate and leak air. You can replace the 6 rivets with nuts/bolts and the pump will function normally with no leaks. I just remembered that I did this around the same time I replaced my o2 sensors and had the same code. Good luck guys. Edit, If your car didn't come with a secondary air pump, perhaps your shut-off valve is not working: http://www.realoem.com/bmw/showparts...58&hg=11&fg=45 http://www.realoem.com/bmw/showparts...59&hg=11&fg=50 | __________________ 5/96 318TI Sport BIG TURBO | | | 01-23-2010, 11:13 PM | #12 | Moderator Join Date: Mar 2007 Location: Maryland Posts: 3,220 | I believe 96 year didn't come with SAP yet. 96 Ti is like the transition year. | | | 01-23-2010, 11:27 PM | #13 | Member Join Date: Jan 2010 Location: usa Posts: 80 | Quote: Originally Posted by BMW_Hatchback I believe 96 year didn't come with SAP yet. 96 Ti is like the transition year. | January 1997 and on had the A.I.R. system. My 97 has a build date of 10/96 so I have no A.I.R. Good thing for me. | | | 05-15-2012, 05:18 PM | #14 | Member Join Date: May 2010 Location: Los Angeles Posts: 55 | bumping an old thread. i checked the air pump and there is definietly air coming from it. I pressed down on it during cold start and the air stopped spewing where i was pressing down....so the rivets are definietly shot. thanks for the tip cooljess i am going to drill out the old rivets and secure them with some bolts. any other tips? __________________ '97 318ti Active; '05 330ci ZHP | | | 05-15-2012, 05:19 PM | #15 | Member Join Date: May 2010 Location: Los Angeles Posts: 55 | Quote: Originally Posted by cooljess76 Just remembered something. Do you guys have secondary air pumps? If so, next time you start your car on a cold engine, stick your hand in the engine compartment and feel around the secondary air pump for leaks. You have to be quick though because the pump only runs for about 30 seconds when you first start the car in the morning. So have you hood open and be ready to run around and feel the secondary air pump. You shouldn't feel any air blowing out of it, but if you do the rivets that hold it together are probably shot which will allow the pump body to separate and leak air. You can replace the 6 rivets with nuts/bolts and the pump will function normally with no leaks. I just remembered that I did this around the same time I replaced my o2 sensors and had the same code. Good luck guys. Edit, If your car didn't come with a secondary air pump, perhaps your shut-off valve is not working: http://www.realoem.com/bmw/showparts...58&hg=11&fg=45 http://www.realoem.com/bmw/showparts...59&hg=11&fg=50 | also this air pump leak lead to engine misfires? thanks! __________________ '97 318ti Active; '05 330ci ZHP Last edited by ofset; 05-15-2012 at 06:21 PM. | | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |