I have a p0744 with a p0327 my car is a g35 coupe 2004!

Question

I had a knock sensor code i changed the knock and connectors the next day! The code was again and with a new one the p0744

1. List item

any help !?

Answer 1

P0744 A/T TCC S/V FUNCTION (LOCK-UP)

This malfunction is detected when the A/T does not shift into 5th gear position or the torque converter clutch

does not lock-up as instructed by the TCM. This is not only caused by electrical malfunction (circuits open or

shorted) but also by mechanical malfunction such as control valve sticking, improper solenoid valve operation,

etc.

 

Possible Cause:

Harness or connectors

(The solenoid circuit is open or shorted.)

Torque converter clutch solenoid valve

Hydraulic control circuit

 

and for  P0327, if you replaced the knock sensor and short harness. check the ground for the sensor 

 

Comments

Thanks! For the knock sensor i will check it i think this is the cause.and about the p0744 i dont have any problem with the transmission all is working fine! So do you think that is all caused by a lack in the electrical circuit !? Thanks again