boweld

Hello,

When I bought my G37 2013 the SES light. There were a few irrelevant mistakes, but after they were deleted, SES stopped lighting.

The car sailed from the USA to Germany and probably the battery was completely broken. I suspect that this had a significant impact on the appearance of "permanent error codes". I can not delete them. I did the procedure with the gas pedal depressed, after disconnecting the battery I pressed the brake pedal to completely lower the ECU voltage.
With no effect. The errors that sit are P0011 (probably from old oil), P0603 (I bet that from the previous battery).

Does anyone have an idea how to clear these error codes?

Best regards, Paweł

Surfnazi

Use a code reader and clear them

SonicVQ

Permanent codes can not be cleared by a scanner. When the detected fault is repaired, then the ECU clears them.

I can't see "old oil" causing a P0011. Change the oil/filter and check the oil pressure to see if the rear timing gasket is leaking. (idle: >14 psi at 80C)

The P0603 is not caused by the battery being disconnected. It is an ECM power supply circuit problem or bad ECU. Has any electrical work been done on the car? (after market radio/amps)

boweld

SonicVQ

I would still check the oil pressure to know for sure...

and I suspect you have an electrical issue as a result of the collision. It may be time to take it to the dealer.

boweld

can a low-pressure error occur from drastically falling RPMs while driving?

slartibartfast

iTrader: (7)

No. The pump is a gear pump that is connected to the crank. It's output is directly related to engine speed. The only way your scenario could happen is if the pump had a clutch that would disengage during decel.

boweld

slartibartfast

iTrader: (7)

The gasket material was changed for the 2012 model year, so that's not your issue. How do you know your oil pressure is plummeting? You're getting an oil light?

boweld

There is no icon on the dashboard regarding the low pressure. How do I start the car in the morning is a problem with engine revs. revolutions reach up to 1,100 and fall below 500 when driving slowly. This happens until the SES lights up. Then the car probably goes into emergency mode and the maximum speed is 3500. The strangest thing is that then it goes smoothly, the speed does not drop and the ignition does not fall out. At that time there is no error 0011 0021 and 0534 (I think). The error regarding low oil pressure appears only as the car goes crazy with low revs.

boweld

Is the information about the fact that from 2012 the gaskets have already been strengthened 100% sure?

Baadnewsburr

iTrader: (3)

Yes, they changed the material the gasket is made of completly.

Have you tried doing an idle relearn?

boweld

Yes, I tried it. It seems to me that the left VVL will be for exchange. Somewhere on the forum I read that the valve VVL has an impact on the throttle position.

boweld

Hello again, yesterday I pulled out both valves VVL. I have connected them under the battery for a short time and it seems to work properly.

https://www.youtube.com/watch?v=q9NV...ature=youtu.be

Just in case, I cleaned the VVL well.
The car all the time after the ignition is waving from revolutions in the range of 900 - 1200. While driving, sometimes only error p0300, sometimes p0011 or both with p0021 appears. After that, the car enters emergency mode and works nicely but only up to 3500 rpm

takemorepills

iTrader: (1)

Not sure how easy it is to do in Germany, but in your case I would seek the assistance of someone with a Nissan Consult diagnostic scanner. OBD2 code readers are somewhat limited, a Consult would likely help you discover the exact cause of the problems.