Q&A

1996 Toyota Camry

Question: egr flow

• MIL P0401- EGR Low Flow Detected
  ...k to shut as it should over 4200 rpm. The only thing that i can find that would cause a MIL p0401 at this point is the sensor sending an incorrect reading of the EGR's correct function, which...

  Q&A > Toyota > 1999 Toyota Camry

• P0401 - have followed posted help - still have problem.
  ...about once a week (I reset it - it will stay off a while then come back on). It always reports P0401 Low EGR flow. This is the Japam made camry for those that know the differences. I replaced th...

  Q&A > Toyota > 1999 Toyota Camry

• P0401 after new EGR valve, modulator and VSV valve - what else?
  ...ng off the vacuum supply by applying power to the VSV valve (incorrectly). I've read that the MAP sensor can fool the system and trigger this error but I am tiring of just replacing parts. Has any...

  Q&A > Toyota > 1999 Toyota Camry

• Failed Emissions Test Due to Blocked EGR System
  ...es which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperature sensor it will trigger a Check Engine Light for improper EGR flow. The repair is to clean out the E...

  Common Problems > Toyota Camry

• i have a 1997 toyota camry the code that i get is po401 egr flow insufficcient,
  i replaced the egr valve with a new one and its good for about 100 miles then it come back on what do i do

  Q&A > Toyota > 1997 Toyota Camry