Hi, Lambda does not lead to being diesel, but it may be that the turbo pressure sensor (in the pressure sleeve, or in collector) this dirty or measured because it does not open the turbo download valve (or by breakage of the pulmon warn that you do not break ... It may also be that the EGR does not work well for dirt, and also as the partner has told you, that it can have water in the diesel filter, to eliminate this, purges the通过过滤器的下部螺钉的水。