2006 Toyota Belta 1500 cc. with engine codes P1603 and P1605

Question

2006 toyota belta ,automatic transaxel, the vehicle idles slightly rough,stalls ocationaly. fault code shows P1603 and P1605. my question is what are the meaning of theese codes.

Answer 1

P1603 EEPROM (eletrical erasable programable PROM)  malfunction

P1605 Keep alive memory test failure

When you get this code, the ECM (engine control module) has failed when its running is running on a set of subsituted values, there is no fuel control at all, the solution is a ECM replacement.

Answer 2

P1603 Toyota Code - Engine Stall History
Read more: https://www.autocodes.com/p1603_toyota.html

P1605 Toyota Code - Engine Rough Idling
Read more: https://www.autocodes.com/p1605_toyota.html