- This topic has 4 replies, 4 voices, and was last updated 11 years, 6 months ago by
.
-
Topic
-
I have a 99 Altima 2.4 GLE with 180K miles on it. The issue is that the check engine light has been appearing frequently over the last couple of months. It goes away by itself but not for long. The light was on again and I finally checked the codes, getting a P0400. Now the car seems to be running fine but my NY state inspection is going to expire at the end of March, meaning I have about 3 weeks to get it inspected again. Would the P0400 code cause the car to fail the emissions inspection even if the engine light id not on? Could be a leaky fuel cap issue as I think the light tends to come on after I pump gas into the car? Or will I have to clean the EGR holes?
-
Replies
-
Yes an Engine light caused by EGR code would cause car to fail to be in honest I’m in new york and I think that any engine light mean you can’t pass emission test. P400 refer to EGR flow issues. So I would start my cleaning the EGR passage port in your car.(also the EGR valve you want to clean)I have a 05 and I just cleaned like 4 month and it was clogged man. So your car is way older and with more miles so probably is super clogged.
About gas cap have nothing to do with EGR. Gas cap is related to your EVAP system.
p0400 is for egr flow. either the egr does not work
or the passages may be clogged.+1 on checking the EGR and it’s passages. Yes, you will fail NY emissions if you have a CEL on for ANYTHING. I would start by checking the EGR system. I’m not sure if that engine still uses a vacuum operated EGR. If it does then as the engine is idling try pulling up on the diaphragm of the EGR. If the engine stalls or stumbles then the EGR is working, if not then you might have clogged passages or the EGR valve itself is faulty. If it does stall or stumble the next step is to find out if the EGR is getting a vacuum signal when it’s suppose to. Honestly I don’t know for sure on that model so you might need to track down a service manual to find the testing for that.
Thanks Eric
It did turn out to be blocked EGR passages. Cleaned them out, deleted the codes, drove for a while, and passed the emissions inspection. CEL came back a few days after the inspection and it was an EGR code again. Might have to replace the EGR valve but it’s not a pressing issue now. Only problem is that there slow and hesitant acceleration at times. Could that be an EGR issue?
- You must be logged in to reply to this topic.