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P1491 EGR code on 2002 Acura RL

 
Old 09-18-2018, 06:17 AM
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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?
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Old 09-18-2018, 06:24 AM
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well, yes. the code is specifically calling for the EGR valve. check it!
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Old 09-18-2018, 09:36 AM
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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.
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Old 09-18-2018, 10:42 AM
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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.
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Old 09-18-2018, 11:02 AM
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Old 12-06-2018, 07:37 AM
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Honestly the EGR valve is just there to meet emissions regulations. It may affect gas mileage but if it does itíll be marginal. Itís an easy repair though, so if you care about the minuscule impact youíll have in the environment, go ahead and pay the $70 for a new one. Itís on top of everything. Just two nuts and a wiring connection and a vacuum hose. 10 minute job, just make sure you donít drop the nuts down onto the transmission cause youíll never get them back (speaking from experience). Just make sure you get a new gasket with it or youíll keep throwing a code.

If you dont donít 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 doesnít pop up.
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