My code reader is picking up P0075 code?

Tiny
BADGER75
  • MEMBER
  • 2008 NISSAN ALTIMA
  • 2.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 229,664 MILES
Have a 2008 Nissan Altima 2.5l. When first got the car it blew one of the boots on the driver's side axle. Replaced it and now my code reader is picking up p0075. I've replaced the ignition coils and the ignition coils plugs, I've pulled the oil solenoid and tested it and it opens like it suppose to and has the right voltage going to it. I've checked the power on the ignition coils. I'm stumped to what it is. Any help?
Sunday, February 4th, 2024 AT 3:58 PM

2 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,776 POSTS
The P0075 diagnostic trouble code for a 2008 Nissan Altima refers to an issue with the Intake Valve Control Solenoid Circuit (Bank 1). This code is for the intake manifold tumbler valve actuator.

The tumble generator valves are controlled by the ECM according to the

coolant temperature and the time elapsed after start of the engine.

When the engine is started, the butterfly valves are moved to the closing

position. In this state, the intake air flows at very high speeds passing

through a narrowed passages in the cylinder Head.

This creates tumbling air motions in the cylinders, which enables

lean mixtures to be ignited and thus harmful exhaust emissions to be

reduced during engine start.

The tumble generator valves will fully open when the engine is at operating

temperature or if the throttle is depressed at any time during warm up it

will disengage the tumble valve, and the valve will move to the open

position until the next cold start up.

The valve is located on the intake manifold on the opposite side of the throttle body. I believe it has a vacuum line which I would check. I have also seen the runner control get gummed up and stop working in which case the intake will need to be removed and cleaned.

Check out the images (below). Please let us know what happens.
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Tuesday, February 20th, 2024 AT 11:56 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,776 POSTS
Anything?
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Saturday, May 11th, 2024 AT 11:30 AM

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