Question

I'm getting both the P0430 and P0744 codes on my 2006 Nissan Maxima. what should I do?

Answer 1

P0744 TCC Function

P0430 Catalytic below threshold Bank 2

P0744 is more a internal mechanical transmission problem, for this fix you may require a transmission control valve assembly, with a pressure control solenoid,  Check the transmission  fluid condition. . If there is heavy debris, more than likely a transmission would be needed, As for the catalytic convertor, the function of the 02 sensor has to be taken into account, clear the codes, retest the vehicle , by getting the monitor ready, If the catalytic monitor does not go to the readiness, you will need a catalytic convertor.

Answer 2

P0430 2006 NISSAN MAXIMA - Catalyst System Efficiency Below Threshold Bank 2
Read more: https://www.autocodes.com/p0430_2006_nissan_maxima.html

P0744 NISSAN - Torque Converter Clutch Circuit Intermittent
Read more: https://www.autocodes.com/p0744_nissan.html

U1000 NISSAN - CAN Communication Line - Signal Malfunction
Read more: https://www.autocodes.com/u1000_nissan.html