Questions & Answers for: Toyota code 401

...code of 1780 and 401............. it would be easy to check it with a continuity tester, you need to disconnect the plug from the rear of the switch and connect the continuity tester to the switch as ...

...but it does not I have a 1999 toyota camry that is giving me a hard time removing the 401 and 402 codes. I had a tune up changed everything from the plugs, wires, pcv valve, af sensor because the ...

...code 401 and 402 for 1999 toyota camry I have already replaced it. I also replaced the modulator as well as the valve, I replaced everything so that Im sure that everything was working even though it ...

...401 code came up. replaced the 2001 Toyota camry 401 code came up. replaced the egr and the modulator valve.. hoses seem clear and there is air flow. reset computer but code came up again. any other ...

...code 401 low egr vacum egr engine check light, code 401 low egr vacum egr and hoses seem ok . could this be caused by vac ctl switch. is this commom problem wits vechicle? how do i troubleshoot to ...

...engine light (401 code, EGR) stills come on what else could this be? there's a solenoid under the intake manifold which has vacuum hose connects to egr valve. this solenoid is having a lot of

code#401 Your 401 code relates to the EGR system, vacuum hose leaks are more common for code setting. Also check vacuum modulator as they are known to faile more often than egr valve. If all check out

...401 so can you tell me the name of that two please thnks Trouble codes are normaly 4 digits with a "P" or "B" before it. I am gonna assume that you meant P0138 and P0401: P0138 is Oxygen Sensor ...

401, 1301 but all these have been sorted now left with PO 325. Pls does this imply? exhaust gas recirculation insufficient and idle air recirculation were part of the information fed from the machine.

1997 toyota camry le 2.2 low emission flow detected, code 401 cat is plugging up probably