jodeci:
The car performance is still super,i have not noticed any abnormality,yet it keeps throwing up "check engine light" and the code is P0011.

I have cleaned the IVT,checked the electrical connection to the IVT and changed the lube oil,yet the code keeps coming back. Sometimes it doesn't show for days.

What could be the problem friends?

I notice my engine vibrates each time i switch off my AC as well.

Costee:

IVT means Intake Valve Timing. So what do you mean by cleaning "the IVT"? However, you may check the following: crankshaft position sensor; camshaft position sensor bank 1; and intake valve control solenoid valve bank 1.

P0011 - "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1) OBD-II DTC Trouble Code Description Generic: "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1) Nissan: Camshaft variable timing control - Bank 1 - performance What does that mean? A code P0011 refers to the VVT (variable valve timing) or VCT (variable camshaft timing) components and the car's PCM (powertrain control module, also called an ECM). That consists of a few different components but the P0011 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is above a set limit (over-advanced), the engine light will be illluminated and the code will be set. The "A" camshaft is either the intake, left, or front camshaft. Potential Symptoms Most likely a P0011 DTC will result in one of the following: hard starting, poor idle, and/or stalling. There are potentially other symptoms as well. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a.k.a. the check engine light) illuminates. Causes A P0011 DTC trouble code may be caused by one or more of the following: Incorrect camshaft timing Wiring problems (harness/wiring) in intake timing control valve control solenoid system Continuous oil flow to VCT piston chamber Failed timing valve control solenoid (stuck open) Possible Solutions This DTC code is a result of a mechanical fault of the VCT unit or related components, so there is no need for electrical diagnosis. Refer to vehicle specific repair manual to perform component tests for the VCT unit. Notes: Dealer techs have advanced tools and the ability to follow detailed troubleshooting steps, including the ability to test components using a scan tool.

Read more at: http://www.obd-codes.com/p0011
Copyright OBD-Codes.com

GAZZUZZ:






Cc: honmusa, mayor2013

mayor2013:
Call multi autolab on 08165520837 or 08156087872 to get a solution

jodeci:


I have applied 12V to the Ivt solenoid and it pops in and out,i have also taken the solenoid and the valve apart,cleaned the internals and coupled back.

If crankshaft or camshaft position sensor is the problem,the SUV will not start at all,but it starts,runs well and check engine keeps poping up.

Costee:

When there are codes I prefer to refer to specific manufacturer’s factory service manual. Here’s what Nissan says as to the possible causes of the code in your 2007 Pathfinder: Crankshaft position sensor; Camshaft position sensor; Intake valve timing control solenoid valve; Accumulation of debris to the signal pick-up portion of the camshaft; Timing chain installation; Foreign matter caught in the oil groove for intake valve timing control.
Perhaps I should add (or ask) if there had been any recent repairs that could have caused a misalignment of the timing chain.
If all else fails it just might be the beginning of the collapse of camshaft system. This code came up recently on a nephew's 2006 Mazda 6. Sadly, it was a change of the entire engine that took away the code.

PS: Check to confirm that the oil pressure is normal. I guess that could be done with a gauge at the oil pressure switch port.

jodeci:


Yea,i replaced the timing chain.
Like i stated earlier,car performance is super,starts at one click and does not have any power loss issue.

I pray i wont have to go back to readjusting the chain cos that will be a long walk..very tedious job.

Costee:

Wonder why you didn't disclose that earlier. Anyway, I'm afraid you might have to retrace your steps back in there, or learn to live with the code.

the P0011 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is above a set limit (over-advanced), the engine light will be illluminated and the code will be set.

jodeci:

...from the manual,the timing is 16 degrees BTDC. What i dont know is how to get this exactly ,i tried the best i could to match the marks pre and post chain installation.
How i wish i could get an expert tool to do this,it is quite interesting.

Costee:

15 +/- 5 degrees BTDC. Yeah, something like a timing light should come in handy.
Btw, what's your rpm at idle speed?

jodeci:


700 Rpm on idle,with the AC on it ups to 900 or 1000

Costee:

Wow! Yet you believe the performance of your Pathy is "still super." Your spec should be 625+/-50, i.e., 675 max. Under normal operating conditions the fact that its under a/c load should affect rpm only marginally. Surely, it's not-all-that-glitters-that's-gold for now. We could try to bring down the rpm to specs, though it might still be necessary to address the timing issue too.

jodeci:


The Rpm is about that 625 to 675,i just gave the 700 as round figure.I will post the pic of rpm in the morning when i start it.

Costee:

Ok. The high figure under load is however still not satisfactory. A scan tool with bidirectional capabilities may be applied to possibly regulate some of these issues. I'm nowhere near your location so I'm unable to render any assistance in that respect.