Faults coming up are p156 p1500 p1523 p1526 p1600

All the infoemation about this fault code is at the link below. P1600 Lexus ECM BATT Malfunction

Hi:

The P1600 code is usually a IMA fault, and the P1449 code is a battery deviation fault.
Both are usually early warning of some sort of hybrid battery issues.
You need to have a system tech give the hybrid system a good look over, but most likely your IMA battery pack is most likely suspect

RUN THE scanner/computer , for easy diagnostic and fix it. Otherwise your must waste time+ money, The electronic vehicle is complicated. see the diagram attached.
God bless you

Hi, these are taken from the data sheets

P1523 - electronic throttle system (ETS) - throttle valve sticking - probable cause = mechanical fault, ECM

P0204 - injector 4 - circuit malfunction - probable cause = wiring, injector, ECM

P0206 - injector 6 - circuit malfunction - probable cause = wiring, injector, ECM

hope that helps

P1526 - Minimum Throttle Position Not Learned

hi, dear friend, this is obd2 trouble code table, it can help you understand the meaning of p1523.
abd I think this tool can clear the code out.
hope help.

P1600-This Relates to Powertrain Control Module Battery Backup Circuit.It will only reset if it is either an intermittent fault or has been repaired.This module and wiring will need inspecting,testing and possible replacement to enable resetting the flash code.I hope this helps,or get back with your findings based upon this info and we can move towards a positive repair solution.

Vanos seals are bad. Beisan systems has a kit for 60.00 to fix it (plus instructions - it takes about 5 hours to do but is pretty easy).

P1523....Electronic throttle control throttle return

the P1600 is loss of the computer keep alive memory circuit, this could be a loose connector or connector pin at the computer, or the computer may have an internal fault, check these items first before anything else.