Throwing P1078 code....which route to take? - G35Driver - Infiniti G35 & G37 Forum Discussion

G35 Coupe V35 2003 - 07 Discussion about the 1st Generation V35 G35 Coupe

Throwing P1078 code....which route to take?

  #1  
Old 07-28-2015, 06:36 PM
Registered User
Thread Starter
Join Date: Nov 2012
Posts: 61
Thanked 0 Times in 0 Posts
Throwing P1078 code....which route to take?

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 [email protected] responded with what's below, and I think this is what Autozone was trying to make me buy:

Originally Posted by [email protected] View Post
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 View Post

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?


Thanks in advance for any help
 
  #2  
Old 07-29-2015, 11:57 AM
Registered User
iTrader: (12)
Join Date: Jun 2008
Posts: 1,351
Thanked 15 Times in 12 Posts
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.
 
  #3  
Old 07-29-2015, 11:59 AM
Registered User
iTrader: (12)
Join Date: Jun 2008
Posts: 1,351
Thanked 15 Times in 12 Posts
Here are 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.
 
The Following User Says Thank You to UR2EZ For This Useful Post:
Muski_G (07-29-2015)
  #4  
Old 07-29-2015, 12:59 PM
Registered User
Thread Starter
Join Date: Nov 2012
Posts: 61
Thanked 0 Times in 0 Posts
....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 View Post
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 View Post
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?

Originally Posted by Silver tiburon View Post
 
  #5  
Old 07-30-2015, 09:11 AM
Registered User
Thread Starter
Join Date: Nov 2012
Posts: 61
Thanked 0 Times in 0 Posts
05 6MT, so rev-up motor

....and I meant to say the SLIP was lighting up earlier, not the rev
 
  #6  
Old 07-30-2015, 10:06 AM
05CoupeMT's Avatar
Registered User
Join Date: Oct 2011
Posts: 132
Thanked 7 Times in 6 Posts
for the same engine.. on the driver side (Bank 2), the EVT sensor is straight and throws the p1084 code...
 
  #7  
Old 07-30-2015, 10:58 AM
yosip1115's Avatar
Registered User
iTrader: (2)
Join Date: Jun 2011
Location: CT
Posts: 1,088
Thanked 73 Times in 72 Posts
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!
 
  #8  
Old 07-31-2015, 12:03 PM
Registered User
Thread Starter
Join Date: Nov 2012
Posts: 61
Thanked 0 Times in 0 Posts
Thanks for the help everyone

I'll get the angled sensor for now and go from there
 
  #9  
Old 08-05-2015, 11:42 PM
Registered User
Thread Starter
Join Date: Nov 2012
Posts: 61
Thanked 0 Times in 0 Posts
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 View Post
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 View Post
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?

Thanks for the help as always
 
  #10  
Old 08-06-2015, 02:22 PM
yosip1115's Avatar
Registered User
iTrader: (2)
Join Date: Jun 2011
Location: CT
Posts: 1,088
Thanked 73 Times in 72 Posts
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.
 
  #11  
Old 08-07-2015, 08:39 PM
Registered User
Thread Starter
Join Date: Nov 2012
Posts: 61
Thanked 0 Times in 0 Posts
Ok, thanks for the clarification on that pic. Really appreciate it

I'm doing my rotors and pads this weekend so I'll locate that third sensor then.

So I'll buy 23731-AL60C it sounds like.....but again, isn't that the same as 23731-AL61A?
 
  #12  
Old 03-15-2019, 05:36 PM
Registered User
Join Date: Mar 2019
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
none
Are there any common issues with these cars? Im looking to buy one soon and I've never owned an Infiniti before. Any advice would be appreciated !
 
  #13  
Old 03-16-2019, 07:09 AM
Registered User
Join Date: Mar 2019
Location: Lexington SC
Posts: 23
Thanks: 0
Thanked 1 Time in 1 Post
G35 coupe black on black with automatic
Reply

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
 
  #14  
Old 03-16-2019, 12:40 PM
cleric670@gmail's Avatar
BANNED!!!
Join Date: May 2017
Location: Washington State
Posts: 5,634
Thanked 610 Times in 569 Posts
Coupe 6MT Premium RAS
Yeah a simple google search of "G35DRIVER vehicle common problems" with the year and style of your car should return a few hundred results.

I also strongly recommend you watch this short video on forum ettiquette.

 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
The Fixer
Steering & Suspension
15
11-01-2015 03:26 PM
atomevolution
Engine - Exhaust
1
10-12-2015 01:00 PM
Learned Hand
G35 Sedan V35 2003-06
1
10-01-2015 09:02 AM
RWDguy4238
The G-Spot
0
09-30-2015 12:13 AM
Hogbone
Engine, Drivetrain & Forced-Induction
2
09-28-2015 06:44 PM


Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Throwing P1078 code....which route to take?


Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: