Question about 2005 Infiniti G35

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I have a M35 Stagea. This engine has a knocking noise in the L/H VVT controller at 1700 to 2000rpm (hot). the duty cycling of the controller is paused and restarted causing the knock. No fault codes present. Thought that the timing chain was stretched causing fault, (comparing phasing of crank & cam from 4cyl engine using the same sensors-looked wrong). New chain made no difference. VVT controller looks ok comparing to the R/H side & spring not broken. Has anyone had this fault?

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  • Chris Howey Jul 13, 2012

    I have had the same problem with L/H VVT controller. I had to replace the outer VVT cover assy (fault seems to be with an electro-magnetic device inside this cover). You will not see anything visually wrong with this part and it does not bring up a fault code in the car. If you disconnect the electrical plug that goes into this cover you will get a fault code and it will also silence the noise as it must de-activate the VVT unit. My local Nissan dealer removed the fault code with their Nissan diagnostic thingy (looked like a laptop) and the noise came straight back. Genuine new parts will set you back about $1200 as you get the whole VVT assy including all the internal gears,spring ,etc. I got a second hand unit from Nissan King but it has made this noise on a couple of occasions so they may get it back yet. One consolation is that the outer cover is quite easy to replace and you don't have to take the whole timing cover off.

  • Chris Howey Jul 13, 2012

    In addition to my comment I've been wondering if the electro-magnetic unit can be rewired (like you can rewire stators). It looks like a sealed unit but I'm thinking where theres a will theres a way? Any comments from anyone on this and has anyone tried it?

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Check your Tappets/lifters from what your describing thats the only thing that can make that noise without a fault code.

Posted on Apr 04, 2011

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Engine is retarted. Replaced cam sensor but didn't fix the problem. Any ideas


What make ,model an year vehicle . an engine ! The engine computer controls timing through the use of sensor inputs . Crank sensors , knock sensors ,coolant temp sensor , engine load , TPS . Unless your referring to VVT - variable valve timing . A cam control solenoid . Do you have any DTC'S - diagnostic trouble codes to go with why you replaced the cam sensor . You need to supply more info if you expect help .

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P0022 for 2004 toyota sienna van


P0022 Toyota - Camshaft Position \'A\' Timing Over-Retarded Bank 2



























Possible causes




- Dirty Oil

- Faulty variable valve timing (VVT)

- Faulty oil control valve (OCV)

- Variable Valve Timing (VVT) harness is open or shorted

- Oil Control Valve (OCV) circuit is open or shorted

- Damaged Engine Control Module (ECM)




Tech notes



If the engine oil is clean and the VVT and OCV circuits are OK, replaced the VVT to resolve the problem.





When is the code detected?


After the ECM sends the target duty cycle signal to the OCV, the ECM monitors the OCV current to establish an actual duty cycle. The ECM determines the existence of a malfunction and sets the DTC when the actual duty cycle ratio varies from the target duty cycle ratio.


Possible symptoms


- Engine Light ON (or Service Engine Soon Warning Light)

- Lack/Loss of power

- Engine rough idle


P0022 Toyota Description


The Engine Control Module (ECM) controls the Oil Control Valve (OCV) to regulate the intake camshaft angle. As a result of the angle change, the engine timing is advance or retard. Optimizing engine timing will help the engine improve torque and fuel economy, and the exhaust emissions decrease under overall driving conditions. The Variable Valve Timing (VVT) system includes the Oil Control Valve (OCV) and VVT controller. The ECM detects the actual intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control.

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1 Answer

What dos vvt system malfunction it mean ?


Variable Valve Timing System Malfunction, and possible causes - dirty or low engine oil
- Valve timing
- Oil control valve
- Variable Valve Timing controller assembly
- Engine Control Module (ECM)

Read more: http://engine-codes.com/p1349_toyota.html#ixzz38fIMYdTd

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Where can I find an online nissan stagea M35 owners manual ?


I got a m35 owners manual from eBay jp-nz about $50 if any one on face book I got a m35 stagea page called Nissan m35 stagea,I put a lot of info on there if your interested

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Computer analysis showed these codes... P0330 P1133 P1135 P1346 P1349 P1351 P1354. can anyone tell me what each of these mean?


P0330 Knock Sensor 2 Circuit (Bank 2)
P1133 Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 1, Sensor 1)
P1135 Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P1346 VVT Sensor Range/Performance Problem (Bank 1)
P1349 VVT System Malfunction (Bank 1)
P1351 Variable Valve Timing / CMP Sensor Range / Performance
P1354 Variable Valve Timing System Fault

NOTE:Variable Valve Timing (VVT) sensor is also known as camshaft position sensor.
The Variable Valve Timing (VVT) system controls intake valve timing in response to driving conditions.

Possible causes are:
  1. Incorrect valve timing P1346, P1349, P1351 & P1354
  2. Faulty oil control valve P1346, P1349, P1351 & P1354
  3. Faulty VVT controller assembly P1346, P1349, P1351 & P1354
  4. Faulty ECM All Codes
  5. Jumped timing belt All Codes
  6. Faulty Camshaft Position Sensor P1346, P1349, P1351 & P1354
  7. Faulty O2 Sensor (Bank 1, Sensor 1) P1133 & P1135

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1 Answer

Knock sensor


It allows the engine to run with the ignition timing as far advanced as possible. The computer will continue to advance the timing until the knock sensor detects pinging. At that point the computer retards the ignition timing just enough for the pinging to stop.
A knock sensor assures that you're getting as much power and fuel economy as is possible from your engine.


knock sensor
The knock sensor responds to spark knock caused by Pre-detonation of the Air/Fuel mixture. As the flame front moves out from the spark plug ignition point, pressure waves in the chamber crash into the piston or cylinder walls resulting in a sound known as a knock or ping. This is caused by using a fuel with a low octane rating, overheating, or over advanced timing. Sometimes it can be caused by hot carbon deposits on the piston or cylinder head that raise compression. A knock sensor is comprised of Piezoelectric materials; Crystals that when impacted, generate a voltage (same idea as a BBQ ignitor). This voltage is monitored by the computer, and when an irregularity is detected, the computer corrects timing in VVT (variable valve timing) engines, or triggers a DTC Diagnostic Trouble Code) in older vehicles.

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1 Answer

Knocking when engine gets hot and car stopped


The fan clutch can make a knocking noise when it tries to engage. At idle it will have a rhythm to it when it tries to engage. You will have an over heating condition and the air conditioning may not work properly.

The fix is to replace the fan clutch and reprogram the engine control module.

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Variable Valve Timing

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