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Alright, so I've searched the multiple threads on this subject and still have a couple questions regarding it; mainly because the part Autozone told me isn't mentioned a whole lot in these threads (it was a $189.00 part that looks nothing like the camshaft sensors). In another post RICH@GRUBBS responded with what's below, and I think this is what Autozone was trying to make me buy:
Originally Posted by Rich@GRUBBS
Are you referring to the Solenoid Valve Timing Control (VTC)
RH - 23796-EA20A
LH - 23796-EG20A
$178 shipped
~Phil~
My check engine light has been on for the past two weeks and it currently idles at 1k-1,200. Today it just stalled while driving and it took me a few tries to get it going again....after I got home I stopped/started it a few more and it had trouble turning on as well. This was the best response I saw regarding the P1078 code:
Originally Posted by LoSt180
DTC P1078 (Bank 1) P1084 (Bank 2) EVT CONTROL POSITION SENSOR
Exhaust valve timing control position sensor detects the concave
groove of the exhaust camshaft rear end.
This sensor signal is used for sensing a position of the exhaust camshaft.
This sensor uses a Hall IC.
Based on the position of the exhaust camshaft, ECM controls
exhaust valve timing control magnet retarder to optimize the shut/
open timing of exhaust valve for the driving condition.
DTC No.
P1078 (Bank 1)
Trouble diagnosis name:
Exhaust valve timing control position sensor circuit
DTC detecting condition:
An excessively high or low voltage from the sensor is sent to ECM.
Possible cause:
- Harness or connectors (Exhaust valve timing control position sensor circuit is open or shorted)
- Exhaust valve timing control position sensor
- Crankshaft position sensor (POS)
- Camshaft position sensor (PHASE)
- Accumulation of debris to the signal pick-up portion of the camshaft
2 years ago I replaced 23731-6J90B (straight sensor) on the passenger side, but now realize we have 4 sensors.
So if I now need 23731-AL61A (angled), do I get two or just one? For driver or passenger side?
What about the Solenoid Valve Timing Control (VTC), is this unnecessary to get, and I just need the angled sensor?
These sensors are tricky. if you replaced 6J90B, you just need to replace the driver side as mentioned, and you need to replace the sensor that is under the car. That's right there's a third sensor underneath. The fourth sensor is deep in the engine, you need to get below the fuel rails and it's annoying. Then you have to replace the harness that goes to that sensor as well. Try the other 2 you haven't replaced yet, then do the last one if all else fails.
the VTC is more rare, and again, much harder than the 3 position sensors.
The other sensor I got from z1 because it came with the harness that i hear can cause problems. But again, this would be something i would do after the 3 position sensors are replaced.
....another day another issue. So my car will take a couple of seconds with the key turned to turn on, and the VSD and REV light are now lit.
Thanks UR2EZ, that really helps and hopefully I can sort this out myself
So here's my question: I've read 23731-6J90B and 23731-AL61A were the only two sensors and there are two on the driver and two on the passenger side...but you have 23731-AL60C and some other one with a harness as the other two I need. Am I following this right? Because I thought I was supposed to buy an angled sensor for the passenger side....
Originally Posted by infinitidude
Ok guys there are only 2 part numbers for these 4 sensors, 23731-6J90B is the straight sensor for both sides and 23731-AL61A is the angled sensor for both sides. The angles sensors are the same on both banks as well as the straight sensors.
Originally Posted by infinitidude
Correct, the straight sensor is directly behind the intake cam and the angled sensor is directly behind the exhaust cam. The angled sensor is the problem sensor. Both on the passenger side. On the driver side it is completely opposite, the angled sensor is for the intake cam and the straight one is for the exhaust cam. Hope this helps brother.
So now I need the drivers side (angled) and another one under the car (23731-AL60C)....if so, where's this third one located?
If he's throwing a code for exhaust valve timing he obviously has a rev up haha. Not the first thread I've seen on the subject of evt lately... DE ftw!
Alright, so I replaced the driver side angled sensor (bank 1) and it fixed the rough start and the VSD and Slip light went off, but the Check Engine light is still on. The idle is still a bit high at 1,000 - 1,200 RPM instead of the normal 750.
It seems like people have different takes on where these sensors are located also
Originally Posted by 05CoupeMT
the 6MT 05 has two sensors on each bank at the back of the engine. The EVT sensor on the passenger side (BANK 1) is the sensor with the 90 degrees angle and is the sensor that throws the p1078. code.
.......looking at the picture, I see only one on each side and Bank 1 should be the drivers side, right?
Originally Posted by UR2EZ
Here are the 3 position sensors
.....isn't 23731-AL60C the same as 23731-AL61A (an angled sensor)? And if you're correct, where is this third sensor located under the car?
Bank one is passenger side, third sensor is on the bell housing. Jack up drivers side, you can get at it with just that side off the ground. It has RTV on it, I would re-RTV (ultra gray) permatex.
I know I found several videos on youtube with common issues and even some likes and dislikes videos from people that own them. I am sure there is a list here somewhere as well. I have had my G35 for about a week now, and in spite of a couple of issues I really love the car. Happy hunting.
Charlie
What is the part number to clear code P1078? I think the code refers to Exhaust Valve Timing Control Position Sensor Bank 1, but I just need the exact part number. There seems to be so many different part numbers that looks like the part I need. If it's it's bank 1, then the sensor should be straight and on the passenger side, right?
