Question about 2001 Hyundai Accent

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Hi there....can you please tell me what scan code P0507 and P0304 are suggesting is wrong?

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Po507 idle rpm higher than expected.idle control valve? po304 cyl 4 misfire.catalyst damage. should repair. looked it up in manual.good luck.

Posted on Aug 28, 2009

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Hy is there a code p0507? and how do i fix?


This P0507 code is one that's sometimes triggered on vehicles that have electronic throttle control. That is, they don't have a regular throttle cable from the accelerator pedal to the engine. They rely on sensors and electronics to control the throttle. In this case, the P0507 DTC (diagnostic trouble code) is triggered when the PCM (powertrain control module) detects an engine idle speed that is greater than the desired (pre-programmed) RPM. In the case of GM vehicles (and possibly others) if the idle speed is over 200 rpm higher than expected, this code will be set. A P0507 DTC trouble code may be caused by one or more of the following: A vacuum leak Leaking air intake after the throttle body EGR valve leaking vacuum A faulty positive crankcase ventilation (PCV) valve Damaged/failed/dirty throttle body Failed EVAP system Failed IAC (idle air controller) or faulty IAC circuit. This DTC is more of an informational code, so if there are any other codes set, diagnose them first. If there are no other codes, inspect the intake air system for air or vacuum leaks and damage. If there are no symptoms other than the DTC itself, just clear the code and see whether it returns. If you have an advanced scan tool that can interact with the car, command the idle higher and lower to see if the engine responds appropriately. Also check the PCV valve to see if it's blocked and needs to be replaced. Check the IAC (idle air controller) if equipped, verify it's operation. If available, try swapping in a new throttle body to see if that fixes the problem. On Nissan Altimas and possibly other vehicles the problem may be fixed by having the dealer perform an idle air relearn procedure, or other relearn procedure


Jul 27, 2014 | 1999 Daewoo Leganza

2 Answers

P0300 P0301 P0302 P0303 P0304


Have you had somebody clear the codes after you installed the parts.If not the codes have to be erased by using a scan tool.

May 05, 2012 | 1998 Dodge Neon

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Hi, I have 2004 Nissan Altima and Service Engine soon light is ON since last few days, today i went to AutoZone and then found Error Code P0507 So can you please suggest how to reset this light? and...


the dreaded P0507, have you had your throttle body cleaned lately? I did clean a neighbors TB while doing other maintenance things to it, and this popped up-and it was miserable getting rid of it. You have to do a 'relearn' procedure (about a million times or so, it seems) and DO NOT take it to a dealer-they will just charge you $100 and tell you to install a new throttle body (not cheap). They know this is a problem, and act like you have done something wrong for merely cleaning a dirty TB. It can and will go away if you do the 'relearn' procedure-read this post for information on how to fix it. it is just annoying but does not have to cost anything to correct. His took MONTHS to reset, but it did, and I did a lot of research on this and can assure you it is not what the dealer would have you think it is-they will try to separate you from your money for this code. read this:

http://www.nissanclub.com/forums/2002-2006-nissan-altima-discussion-2-5-3-5/243119-p0507-idle-control-system-rpm-higher-than-expected.html

Sep 05, 2011 | 2003 Nissan Altima

2 Answers

The Malfunction Indicator Light(check) of my 2003 Hyundai Tiburon stays on. I read the manual is says" This light illuminates when there is a malfunction of an exhaust gas related component, and the...


you need to scan for codes
codes will tell you what has malfuntion
you can buy a scanner or take to a garage to scan
some parts store will scan and retrive codes and make suggestion
based on previous sales what may be wrong
your car your call

Apr 06, 2011 | Hyundai Tiburon Cars & Trucks

1 Answer

We have a 03 Passat GLX 4Motion, we have replaced spark plugs with NGK V Power Resistor, replaced spark plug wires with BWD Wire Set, and replace the coil with an after market don't remember the brand. We...


p0301 p0302 p0304 p0306 these are all misfire codes im gonna put his in simple words for you is the vehicle running good if it is have the codes removed there stored in the computers memory a parts store has a ob2 scan gun they can erase codes have you tried to have them erased now if the light comes right back see what codes its reading now i looked up all the codes there all refering to the work that was done on your car im not saying the work was done wrong but unless you reset the codes now if they come back the p0351 and p0352 has to do with the ignition coil but i promise you this if your car isnt missing with all theses codes then all that has to be done is erase codes get back with me tell me how it turns out some parts are not compatable with foreign cars

Dec 11, 2010 | 2003 Volkswagen Passat

1 Answer

What does a pending code mean? I scanned for codes on my van and I got a P0304 and a Pending P0304 and it says 2 codes returned? Can my computer be bad?


P0304 means that you have a misfire on cylinder #4.Pending code are secondary indicators to let the mechanic know that the problem is more or less constant even if it is a random missfire.

Feb 09, 2010 | 2001 Dodge Caravan

1 Answer

Code P0304. What exactly is this code telling me?


p0340 cyl 4 misfire /check plug /wire /distributor cap/ injector

Jan 13, 2010 | 1997 Mercury Grand Marquis

3 Answers

Code P0507


P0507-- idle speed high

Jun 02, 2008 | 2001 Chevrolet Impala

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