Questions & Answers for: Toyota code 340

code po401 and po 340 here's a link to some information on the codes you asked about P0401 P0340 good luck! For the po401 code, clean your EGR valve. Its showing insufficient flow going through it

...and firm and the shifts are good also. I hooked it up to a scanner & there isn't any codes & all data is working like it should. all drums air checked & all three one way

...catastophic and constant. they should hang up their compression gauge. CAN I assume you reset all codes and they come back. (pulling sensors ,etc. running will cause many errors) so reset it and

...340 generation 3. 3L v6 used. E=electronic shifted (TCM brain F= 4wd same as E shifted. 3 electrically controlled solenoids for shifting and torque converter(TC) lock up(TCU runs the SHOW) There is s ...