Inspection failed - code is P1491

Tiny
NANKU71
  • MEMBER
  • 2001 HONDA ACCORD
  • 3.0L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 155,000 MILES
The exact text from the inspection report says.
"Based on information obtained from the On-Board Diagnostic (OBD) system, this vehicle has failed due to a problem with the pollution control system. To continue with the inspection process, the pollution control system should be repaired and the vehicle reinspected. "
The "Individual Code Present" is p1491.
Can you advise what needs to be done.
More over, is it worth getting this repaired for a car with 155k miles?
Sincerely,
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Tuesday, December 16th, 2014 AT 7:08 AM

3 Replies

Tiny
JOHNNYT73
  • EXPERT
Absolutely this car is worth keeping. Its Honda with only 155k miles. These vehicles will last double that. The code is for "EGR valve insufficient left". I would probably have the EGR valve replaced and EGR passages cleaned.
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Tuesday, December 16th, 2014 AT 7:46 AM
Tiny
NANKU71
  • MEMBER
Thanks for your response. I am going to try and replace the EGR Valve to see if that helps. Else will have to go for further cleaning of the intake manifold.
Here is what I want to do my self. From another forum.
Re: Cost to have EGR Valve Cleaned?
If you have a small set of sockets, you can do it yourself and save the money. A can of carb cleaner is $5, EGR gasket is only a few bucks, and wire brushes are pretty cheap.

Unplug the electrical harness that comes out of the top of it. Next, undo the two bolts that hold it in place. They are directly across from each other, the actual EGR in the middle.

Once you get the bolts out, the EGR should come off. Remove the old gasket, and clean both surfaces of any old gasket material. Your wire brush will do this just fine.

Now, you will see a little hole that looks like it go's back into the intake manifold. Take your carb cleaner, put the little straw in the nozzle, put it in that hole, and spray. You will probably make a mess of things, but don't worry, that stuff dries up pretty quickly. Do this several times.

Then, reassemble.

Now, keep in mind, since you just sprayed carb cleaner into your intake manifold, the first time you attempt to start it up, it may not want to. Just try a few times, and you will finally get it to start.

Then your done.
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Tuesday, December 16th, 2014 AT 8:16 AM
Tiny
JOHNNYT73
  • EXPERT
That all sounds correct to me. Good luck!
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Tuesday, December 16th, 2014 AT 8:18 AM

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