Dtc p0171 audi

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Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. The car seems to be running fine other than the EML on the dash and a slight fluctuation in revs when stationary. I'm thinking I should look to change the Diverter Valve first?

Dtc p0171 audi

Thread Tools. Well got in my car today after coming back from the car wash to clean up and take care of my debadging I did and she decides to pay me back by throwing on the check engine light next time I went out. I do not know what that means at all or where to start at all besides knowing it has to do something with fuel and it is not getting enough fuel I would assume. Curious if anyone has any idea what it could be or if there is something common or notorious that it could be. Background information. Bought car used, about a month ago. At time of purchase timing belt and water pump done. Any suggestions or tips would be much greatly appreciated. I switched back to stock mode tune and the light was still on. Thanks again View Public Profile. Send a private message to blackops. Find More Posts by blackops.

New Audi - charging system failure and other gripes. And the exhaust seems to be dtc p0171 audi a little more on overrun which does sound nice. Also, this morning when warming up the car, it suddenly died.

B5 Models Please discuss all - B5 A4 topics here Thread Tools. I recently got a check engine light on my A4 Quattro with about K miles. After doing some reading, it appears that it is either an 02 sensor, MAF sensor or vacuum hose leak around the engine. I replaced my MAF sensor not 5 thousand miles ago, so I'm pretty confident it's not that. Personally I think it's a vacuum hose leak, but I'm not sure how to go about checking for that..

Thread Tools. Well got in my car today after coming back from the car wash to clean up and take care of my debadging I did and she decides to pay me back by throwing on the check engine light next time I went out. I do not know what that means at all or where to start at all besides knowing it has to do something with fuel and it is not getting enough fuel I would assume. Curious if anyone has any idea what it could be or if there is something common or notorious that it could be. Background information. Bought car used, about a month ago. At time of purchase timing belt and water pump done. Any suggestions or tips would be much greatly appreciated.

Dtc p0171 audi

Home » OBD Codes. A P code appears in the engine control unit when the oxygen sensor on bank 1 recognizes too lean of an air-fuel mixture for the sensor to correct it. Several different things could cause this trouble code. Here is what you need to know about the P code. The P code indicates that the oxygen O2 sensor on bank 1 sent a signal to the engine control module that the air-fuel mixture is too lean to be corrected. If it needs to be corrected more than that, the P code will be stored.

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I've got the same problem with the P code and the corroded check valve. If you're on a tight budget, start there, but that may not be the fix for certain. Since then the average mpg has increased from 27mpg to a whopping If anyone has any other suggestions as to what might cause this code, I am open to advice. I am thinking it is a vacuum leak of some sort but am wondering why the CEL clears for days, then comes back. I won't be able to get it into his shop for another week. Quote message in reply? Tried to restart but it wouldn't come back. P System Too Lean Bank 1 code. Consult your service manual for it's location if you need help. Send a private message to initialA4. The car seems to run fine, but I have to keep clearing the CEL every days. Register or Log In now!

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Any suggestions or tips would be much greatly appreciated. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! My 02 has thrown that code twice, both times it took about 5 minutes to locate the split vacuum hose under the hood. Posting Quick Reply - Please Wait. Sort by Oldest first Oldest first Newest first Most reactions. To start viewing posts, select the forum section that you want to visit from the selection below. I know it is not the intake manifold because I already had that replaced at 17k miles and the car hesitated like bucking bronco at idle. The time now is AM. Also, this morning when warming up the car, it suddenly died. Check carefully for leaks loose hoses in on and around the manifold with a good light. Thanks for your help! Sign up. Newbie here. Find More Posts by blackops.