Car Questions
RepairPal is your advocate for car care advice and guidance

I keep getting a P401 code EGR flow insufficent on my 2003 honda civic 1.7

(2003 Honda Civic)
in Roxboro, NC on February 23, 2012
I have cleaned around the EGR port several times but still getting the code. After cleaning I can run the car for about 30 minutes but will still get the code. I have even bought a new one but still getting the code. What else could be wrong.
Displaying 1 answers & 2 comments
Popular Answer
on February 23, 2012
the amount of vacuum to the valve. hondas are common for carbon clogging the vacuum ports to the egr. have a shop verify this.

on February 24, 2012
What ports are you talking about this only has an electrical connection to the top of the valve..
on February 24, 2012
when you remove the valve, there are 2 ports. one is exhaust and one engine vacuum. the engine side tends to clog badly with carbon.

RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
Sometimes it shifts fine but mostly bad shifts from 1st to 2nd (hard shifts) I have checked everything lock up sylini...
It happens when check engine light is on.But check engine light gos off for a bit and then it works until it comes ba...
Didn't find what you were looking for?