Question about 1996 Mercedes-Benz C-Class
The check engine light is on. When I pull the codes I get a P400 fault and a P460 pending code. The code only says "EGR System" I was wondering where to start looking for the problem.
Check your IAC Idle Air control valve. It is located on the top right back of the motor behind the air intake. You can also remove the EGR valve and check to see that the piston is not gummed up. If it is then replace that. Also look for simple cracks on the boots or hoses sometimes that will cause this to happen. If this helped please rate. Thank you
Posted on Feb 12, 2009
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Posted on Jan 02, 2017
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Jan 31, 2016 | Cars & Trucks
Dec 03, 2014 | 2005 Mercedes-Benz C-Class
When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.
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