My 2005 altima idles high and engine code p0507.Recently had the throttle body cleaned.What can i do to fix this problem
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.
Most likely you'll notice the idle speed is higher than normal. There are potentially other symptoms as well. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a.k.a. the check engine light) illuminates.
CausesA 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
Possible SolutionsThis 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 procedures
×
Your Altima will require an idle air volume learn after cleaning. This procedure will set your idle speed. If the code keeps recurring after the IAVL your throttle chamber may need to be replaced.
2004 altma replaced new gaskets on bottom and top intake also replaced throttlebody had it put on a snap on scanner still problem with high rpm and surges up and down.went through relearing still same problem
3,361 views
Usually answered in minutes!
I disconnected battery on altima 2005 now the idle goes up and down
I replaced starter on 2005 altima now my idle goes up and down
×