P1491 EGR code on 2002 Acura RL
09-18-2018, 06:17 AM
#1
P1491 EGR code on 2002 Acura RL
I have a 2002 Acura RL that has about 267,000 miles on it. Still going strong, but the CEL threw a P1491 code (EGR valve). I've seen write ups of what folks who had a P0401 code did to clear their problem (pull the manifold to clean carbon buildup, clean EGR valve, clear by-pass pipe). But, with a P1491, what's the best tact to take? Same thing as P0401?
09-18-2018, 09:36 AM
#3
My 98RL is now at 245k. Had intake manifold removed and properly cleaned 10 years ago at 165k miles. Have had P1491 (EGR insufficient lift detected) occur about 6 times since, with the most recent being 18 months ago at about 220k miles. I just logged the occurrence and cleared the code with my code reader. Don't think it's anything to worry about unless it becomes persistent.
09-18-2018, 10:42 AM
#4
Well, when I take it for inspection come November, the inspection folks won't pass my car if there are any codes (Check Engine) showing.
RL98: How difficult did you find removing the manifold to get to your EGR and bypass pipe? I've seen the write-ups. I dread doing open-heart surgery, but feel I probably need to, considering I have never done it. Typically, RxP (from Autozone) clears most dealing with the exhaust system. But so far, not this one. I might try BG44K as a last-ditch effort before doing the nasty deed.
RL98: How difficult did you find removing the manifold to get to your EGR and bypass pipe? I've seen the write-ups. I dread doing open-heart surgery, but feel I probably need to, considering I have never done it. Typically, RxP (from Autozone) clears most dealing with the exhaust system. But so far, not this one. I might try BG44K as a last-ditch effort before doing the nasty deed.
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Rhubarb33 (09-18-2018)
12-06-2018, 07:37 AM
#6
Honestly the EGR valve is just there to meet emissions regulations. It may affect gas mileage but if it does it’ll be marginal. It’s an easy repair though, so if you care about the minuscule impact you’ll have in the environment, go ahead and pay the $70 for a new one. It’s on top of everything. Just two nuts and a wiring connection and a vacuum hose. 10 minute job, just make sure you don’t drop the nuts down onto the transmission cause you’ll never get them back (speaking from experience). Just make sure you get a new gasket with it or you’ll keep throwing a code.
If you dont don’t want to waste $70 then all you have to do is live with the engine light staying on and maybe stop at autozone to read the codes every few months to make sure something new doesn’t pop up.
If you dont don’t want to waste $70 then all you have to do is live with the engine light staying on and maybe stop at autozone to read the codes every few months to make sure something new doesn’t pop up.
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