Saab P0506 Idle Air Control System RPM Lower Than Expected Large vacuum leak on engine

Description

OBD-II Trouble Code Description for P0506 Saab

Idle Air Control System RPM Lower Than Expected

What does this mean?

OBD2 Code P0506 Saab definition:
This P0506 Saab 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 P0506 Saab DTC (diagnostic trouble code) is triggered when the PCM (powertrain control module) detects an engine idle speed that is lower than the desired (pre-programmed) RPM.

Symptoms

Possible sumptoms of OBD code P0506 Saab
Most likely the only thing you’ll notice is the idle speed is lower than normal so it will likely be rougher. 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.

Causes

Possible causes of OBD code P0506 Saab
A P0506 Saab DTC trouble code may be caused by one or more of the following: A vacuum leak An air restriction in the intake air path or exhuast A faulty positive crankcase ventilation (PCV) valve Damaged/failed/dirty throttle body Internal engine problem Failed PCM

Possible Solutions

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 for vacuum leaks, restrictions, and damage. If there are no symptoms other than the DTC itself, just clear the code and see whether it returns.

Related Codes

P0505 Saab P0506 Saab P0507 Saab


The OBD2 Code Information Be Applicable For Saab:

2012 Saab 9-5,2012 Saab 9-4X,2011 Saab PhoeniX Concept,2010 Saab 9-5 Sedan,2010 Saab 9-3,2010 Saab 9-3X,2008 Saab Turbo X,2008 Saab 9-X,2008 Saab 9-7X,2008 Saab 9-4X,2008 Saab 9-3,2008 Saab 9-3,2008 Saab 9-3,2006 Saab 9-7X,2006 Saab 9-5,2006 Saab 9-3,2005 Saab 9-5,2005 Saab 9-3,2005 Saab 9-2,2003 Saab 95,2003 Saab 93

 

Note:

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