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2aa0 camshaft sensor inlet signal
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02-13-2020, 07:39 PM | #1 |
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2aa0 camshaft sensor inlet signal
im throwing a 2aa0 camshaft sensor inlet signla and a 3100 boost pressure control deactivation
i have purchased two cam shaft sensors from fcp euro, i have switched the vanos solenoids and cleaned the vanos with air as well as cleaned the cam shaft sensor wires with air the sensors are flush and tight. i am scanning with mhd it used to say there was a synchronization problem before i put the new camshaft sensor back in. i have been through all the DIYs and am scared it is the camshaft ledge can is a 2007 335xi with about 150k miles on it. I just replaced the turbos, the valve cover gasket, the inlets, outlets, fmic, charge pipe, dci, vacuum lines, lower charge pipe, added a oil cooler, added a trans cooler, flashed it with mhd then flashed back to stock, have upgraded r8 coils, and ngk spark plugs that are gapped correctly. I have already dropped a ton of money into this and time and do not want to dive into a cam ledge replacement right now. Anyone have this same problem?? |
02-14-2020, 11:44 AM | #2 |
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The chronology of events is unclear from your description
Are you saying you had a CEL then observed 2aa0 and 3100 code, then replaced both intake and exhaust sensors, still had those codes, then swapped VANOS solenoids and still had those codes? Or are you saying there was a "synchronization" code at first and but then, after replacing a sensor, it changed to 2aa0/3100? What exactly was that "synchronization" code? Edit: a simple thing to check is if the center part of the oil filter cap is in place. They break off and are sometimes discarded by incompetent service personnel during filter change. That will give you low oil pressure that can cause VANOS related codes. You might also want to check the wires from the camshaft sensor for continuity back to the DME |
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02-15-2020, 05:01 PM | #3 |
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had 2a9e and replaced sensor and that was gone but the 3100 and the 2aa0 were still present.
just checked the center part of the oil cap it is still there with the new green ring. oil was actually running out the top of the filter housing with the new thermostat delete i have down to the oil cooler, so def not low the wires are running 4.4v and 11. something volts i cant remember how high just put in a new battery too yesterday - DME active codes - 2AA0 - DME: Camshaft sensor, inlet, signal. 3100 - DME: Boost-pressure control, deactivation. - Misc. information - MHD build: version 1.91 Voltage 11.98V Last flashed file : Stg0 VIN: WBAVD53517A008625 CAS VIN: WBAVD53517A008625 Factory software: 7575914 Current software: 7626262 ECU status: Normal operation - Readiness - Misfire: Complete. Fuel System: Complete. Components: Complete. Catalyst: INCOMPLETE. Heated Catalyst: Not avail. Evaporative System: INCOMPLETE. Secondary Air System: Not avail. A/C Refrigerant: Not avail. Oxygen Sensor: INCOMPLETE. Oxygen Sensor Heater: INCOMPLETE. EGR System: Not avail. thats from MHD |
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02-15-2020, 08:24 PM | #4 |
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OK, so you are saying:
1) the wiring is OK (which I could not tell from your description) 2) the sensor is new 3) the VANOS solenoids were ruled out by swapping 4) low oil pressure fault from oil cap issue unlikely There are other explanations for oil pressure related VANOS problems including the cam ledges and VANOS filters/check valves. However, that seems unlikely because 2a9e and 2aa0 are not the typical codes accompanying problems in those areas. That leaves a possible damaged VANOS adjusting unit - the thing attached to the camshaft. Fits very well with 2a9e code. There are a number of posts detailing adjusting unit failures on N52 engines. However, I can't recall any for the N54, which uses a different unit. You can use INPA to interrogate the VANOS signals in real time. That may provide useful clues for diagnosis Here's a link to a wiring diagram relating to the position sensors. What voltage do you see on what pin under what condition? Obviously there ought to be 13.8-14.5 on the red wire when the engine is running or 12.6 when ignition is on. Blue/blk should be ground. Yellow is the signal wire. https://www.newtis.info/tisv2/a/en/e...e-gear/xCYjJP2 Last edited by dpaul; 02-15-2020 at 08:35 PM.. |
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02-16-2020, 06:54 PM | #6 |
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Where are the vanos filters located on a 2007 e90 n54 335xi. On the videos i found it looks near the Y section of my vrsf outlet but i cant see any bolts
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02-16-2020, 06:59 PM | #7 | |
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Quote:
https://www.bimmergeeks.net/downloads |
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02-16-2020, 07:01 PM | #8 | |
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Quote:
https://www.realoem.com/bmw/enUS/sho...diagId=11_3966 #11 - "non-return valve" |
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02-17-2020, 07:06 AM | #10 |
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02-17-2020, 08:10 AM | #12 |
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Yes, really two. Notice the quantity indicated in the diagram part list is 2
Be sure you are not confusing with cam chain tensioner bolt |
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02-17-2020, 12:52 PM | #13 |
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i was looking at the cam chain tension-er. dam those bolts are a pain i was trying it with 6 connections(exaggeration) and couldn't get on that check valve, im gonna head to my local indy shop tomorrow to have them run diagnostics
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02-17-2020, 04:11 PM | #15 |
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Drives: 2007 Black/Black 335i e90
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Vanos Solenoids are located in the front of the engine just below the valve cover. The cam shaft sensors are kiddie corner from them on the underside of the valve cover.
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02-21-2020, 05:26 AM | #17 |
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So it was the cam ledges. One of them but since the mechanic is in there im going to have him do both bc an extra $700 now is better than $2300 later. Anything else he should check while hes in there???
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02-21-2020, 06:14 AM | #18 |
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Hopefully ledges will do it. You had mentioned a recent replacement of valve cover gasket in your first post - if that did not eliminate the leak, then it might be time to replace the valve cover itself.
Other than that, can't think of anything. Definitely report back on outcome |
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02-21-2020, 06:28 AM | #19 |
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What leak? I replaced the valve cover and gasket im not worried abt the cover its the sensor n that was found to b the ledges. Im confused abt ur post dpaul
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02-21-2020, 06:56 AM | #20 | |
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Quote:
I hope that makes sense to you. |
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02-26-2020, 12:48 PM | #22 |
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so still waiting on the car but if anyone gets their ledges done while they are in there have them change the soft lifters and have them replace the two check valves, its an extra 100 - 200 in parts and it will save you a ton of headache.
also dont do one ledge do both, only doing one ledge saves you 500 but having to replace that in the future is 2100, so just get both done for 2600 |
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