
I guess I don't understand Mercedes EGR monitor theory
This car came in with a P0400 which we have seen before and
diagnosed fairly easily. Bad valve, bad electric valve which
comes with the valve or plugged ports, vacuum or flow. This
particular vehicle has a very well maintained 180k on the
clock. ![]()
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Engine | 2.6 L |
Trans | 5-speed Automatic (Electronic) |
Vehicle Data
2003 Mercedes-Benz C240 4Matic 2.6L
Engine | 2.6 L |
Trans | 5-speed Automatic (Electronic) |