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Cause for the dreaded P0011/P0021 codes that everyone is curious about

G35 Sedan V36 2007- 08 Discussion about the 2nd Generation G35 Sedan 2007 - 08

Cause for the dreaded P0011/P0021 codes that everyone is curious about

  #406  
Old 01-11-2018, 07:37 PM
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Help!!!!! 01/11/18

Im dealing with this issue right now with codes p0011 and p0021. The car is an 06 Infiniti G35 Coupe 5at DE MOTOR.

I recently had my engine replaced bc of bad compression after going turbo. Sold the turbo and got a USED 110K mile motor. Drove it 900miles and went WOT one night and the car starts popping from the exhaust. Didn't think anything of it till the next day I went WOT again and got to my destination and turned the car off for a good 1 or 2 hours. Turned the car on and it struggled. I thought it was weird so I turned it off and then back on and it struggles but this time with the 2 codes.

took it back to the shop and the shop warrantied my engine and got me another engine at 55k miles. compressions on this engine were really good. BUT the problem still exist!

I can't think its an engine problem. The only thing that was pulled out and replaced was the engine so what gives?!

Is it an ECU issue? Harness issue? PLEASE HELP ME GUYS!!!
 

Last edited by Algy; 01-11-2018 at 08:26 PM.
  #407  
Old 01-11-2018, 07:55 PM
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Originally Posted by Algy View Post
Im dealing with this issue right now with codes p0011 and p0021. The car is an 06 Infiniti g35 5at.

I recently had my engine replaced bc of bad compression after going turbo. Sold the turbo and got a USED 110K mile motor. Drove it 900miles and went WOT one night and the car starts popping from the exhaust. Didn't think anything of it till the next day I went WOT again and got to my destination and turned the car off for a good 1 or 2 hours. Turned the car on and it struggled. I thought it was weird so I turned it off and then back on and it struggles but this time with the 2 codes.

took it back to the shop and the shop warrantied my engine and got me another engine at 55k miles. compressions on this engine were really good. BUT the problem still exist!

I can't think its an engine problem. The only thing that was pulled out and replaced was the engine so what gives?!

Is it an ECU issue? Harness issue? PLEASE HELP ME GUYS!!!
Have you read the FSM?

http://www.nicoclub.com/service-manu...6_G35_Sedan/ec

"TE:

If DTC P0011 or P0021 is displayed with DTC P0075 or P0081, first perform trouble diagnosis for
DTC P0075 or P0081. Refer to
EC-193, "
DTC P0075, P0081 IVT CONTROL SOLENOID VALVE
"
.

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.
TESTING CONDITION:
"]Before performing the following procedure, confirm that battery voltage is between 10V and 16V at idle

If you have a dead or weak battery that may be the source of your problem?

Telcoman
 
  #408  
Old 01-11-2018, 08:18 PM
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Coupe 6MT Premium RAS
I would rule out the engine and all components like solenoids since the issue persisted on BOTH engines. Check with the mechanic though to verify they didn't swap any sensors, solenoids, anything.

Are you using a custom tune?

Short answer is yes it might be the ECU but go through all the steps in the FSM and you will find your answer.
 
  #409  
Old 01-11-2018, 08:25 PM
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Originally Posted by [email protected] View Post
I would rule out the engine and all components like solenoids since the issue persisted on BOTH engines. Check with the mechanic though to verify they didn't swap any sensors, solenoids, anything.

Are you using a custom tune?

Short answer is yes it might be the ECU but go through all the steps in the FSM and you will find your answer.
Yes the car has been flashed with UPREV
 
  #410  
Old 01-11-2018, 08:26 PM
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Originally Posted by telcoman View Post
Have you read the FSM?

http://www.nicoclub.com/service-manu...6_G35_Sedan/ec

"TE:

If DTC P0011 or P0021 is displayed with DTC P0075 or P0081, first perform trouble diagnosis for
DTC P0075 or P0081. Refer to
EC-193, "
DTC P0075, P0081 IVT CONTROL SOLENOID VALVE
"
.

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.
TESTING CONDITION:
"]Before performing the following procedure, confirm that battery voltage is between 10V and 16V at idle

If you have a dead or weak battery that may be the source of your problem?

Telcoman
Sorry I should have been more descriptive. Its a 2006 G35 COUPE 5AT DE MOTOR
 
  #411  
Old 01-11-2018, 09:18 PM
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My guess is you should reflash back to stock and see if the problem persists. This is all under the assumption that you have a cable, if you had a tuner do it then you won't be able to just flash back to your current tune without paying them again probably.
 
  #412  
Old 01-11-2018, 09:55 PM
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Originally Posted by [email protected] View Post
My guess is you should reflash back to stock and see if the problem persists. This is all under the assumption that you have a cable, if you had a tuner do it then you won't be able to just flash back to your current tune without paying them again probably.
That was my initial guess thinking its something wrong with the tune. So what I had the tuner do was just refresh it with my current tune to see if it would do anything. We didn't refresh back to stock though.

But then again nothing changed
 
  #413  
Old 07-24-2018, 10:39 PM
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Center dowl not aligned to the dot
Opened it up because there was play.
Found out it was broken. Same small pieces of metal i found in the Oil Pan.
I had P0011 and P0300 random misfires and decided to do some exploring myself. Saved myself over 4000 from taking it to the STEALERSHIP. They told me it was possibly the Galley gasket. I checked and they were completely intact. Checked the timing chain and noticed the sprocket was not aligned to the dot. I took off the secondary chain only to find play within the sprocket. Took it off, unbolted it and found out why I was having misfires.

*Had 95,000 miles on the VQ35HR
 

Last edited by Poncher; 07-25-2018 at 08:09 PM.
  #414  
Old 07-28-2018, 01:00 AM
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Owch, that's an expensive component too. I wonder what caused the damage?
 
  #415  
Old 07-31-2018, 02:52 AM
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Originally Posted by [email protected] View Post
Owch, that's an expensive component too. I wonder what caused the damage?
Sourced a used sprocket from eBay for $50. And I am not sure what caused it to break.
I put everything back together and I am now getting the P0300 and P1078 codes. P0011 is gone.
From what I read P1078 is related to the passenger exhaust valve timing control. When starting up the engine, it idles very rough. It can sometimes stall out.
Steps I have done so far: checked the coil packs for stable resistance other than OL or 0. All 6 cool packs were good. Spark plugs are gapped to ~.43 ~.44. Passenger side are fouled. 4 new Camshaft (valve covers) and 1 new Crankshaft (transmission) sensors are OEM new.
I also tried doing the learning procedures (idle/throttle body/and the exhaust valve timing control because I pulled out the magnetic retarders)
The vvt solenoids seem to be plunging when 12v dc is applied.

I am running out of options.

Compression (leak down) test is next for bent (exhaust) valves.
 
  #416  
Old 09-16-2018, 01:07 PM
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I had the P0011 issue and had the repairs completed. However, my fuel mileage really dropped after the repair. I was average over 400km per tank before the repair and now only getting 300km average per tank. I noticed the dealer did update the ECM after the repair and reset idle/intake timing. Would that have caused the mileage issue instead of the P0011 fix? Has anyone experienced worse mileage after the P0011 repair?
 
  #417  
Old 02-15-2019, 04:45 PM
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G37X
This is great to know.

What year G37 was your car.

We have 2011 with low oir pressure. Same error codes.

Just want to make sure the gasket on this thread will work on this car also

?

 
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