Lx 450
Thread Starter
Driver School Candidate
Joined: Nov 2006
Posts: 1
Likes: 0
From: Texas
Lx 450
I went to AutoZone because the check engine light was on.
The code ----------P0401.
The PCM ghas determined that there is unsufficient flow in the exhaust gas recirculation system.
Can somone tell me how to replace and/or clean.
The code ----------P0401.
The PCM ghas determined that there is unsufficient flow in the exhaust gas recirculation system.
Can somone tell me how to replace and/or clean.
Pole Position
Joined: Jul 2003
Posts: 235
Likes: 2
From: California
The easiest solution would be to have someone check/replace the EGR valve and/or the Vacuum Switching Valve.
your code indicates one of the following problems:
EGR valve stuck closed.
EGR Vacuum Switching Valve (VSV).
EGR VSV open circuit.
EGR valve position sensor open or short circuit.
EGR valve position sensor.
ECM.
your code indicates one of the following problems:
EGR valve stuck closed.
EGR Vacuum Switching Valve (VSV).
EGR VSV open circuit.
EGR valve position sensor open or short circuit.
EGR valve position sensor.
ECM.
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