permanent dtc codes

[hindi1973]

hi guys i have a customer who has a 370z with a turbo set up (sts) and he blew his motor then we got him a complete gtm stage 1 block parts and installed it in his block since the install the car is on limp mode code 0011 and 0012 which is regarding the advanced cam timing bank 1 and 2 i think anyway we changed every single part that is related for this problem starting with pcv to sensors to making sure cam timing was right to flushing the engines just encase dirty oil might be there , Finally i got a new code reader and it says i have the same codes but not only pending or cleared but permanent , I googled around and found out permanent codes are impossible to clear unlessand the ecu is stuck with them unless a car does a complete drive cycle procedure is this true? all help is appreciated since the car was put togather 5 months ago and till today we cant fix it although we added new parts for every single thing we thought is related to the codes mentioned above .

the following is the prodecude mentioned in another nissan forum
thank you


1. Start the engine. Allow the engine to idle until
the engine coolant temperature gauge needle
points between the C and H (normal operating
temperature).

2. Accelerate the vehicle to 55 MPH (88 km/h),
then quickly release the accelerator pedal
completely and keep it released for at least
10 seconds.

3. Quickly depress the accelerator pedal for a
moment, then drive the vehicle at a speed of
53 to 60 MPH (86 to 96 km/h) for at least 9
minutes.

4. Stop the vehicle. Leave the engine running.

5. Accelerate the vehicle to 35 MPH (55 km/h)
and maintain the speed for 20 seconds.

6. Repeat steps 4 and 5 at least 10 times.

7. Accelerate the vehicle to 55 MPH (88 km/h)
and maintain the speed for at least 3 minutes.

8. Stop the vehicle. Place the automatic trans-
mission gear selector lever in the P (Park) or
N (Neutral) position or the manual transmission
shift lever in the N position.

9. Turn the engine off.

10. Repeat steps 1 through 8 at least one more
time.


If step 1 through 7 is interrupted, repeat the
preceding step. Any safe driving mode is acceptable
between steps. Do not stop the engine
until step 7 is completed.