Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hi. I have a 2005 C320 CDi. I have been advised that the lambda sensor needs to be replaced and that it should be at the front of the cat with a second sensor behind the cat. Have jacked the vehicle up, I have two sensors after the cat but none before. The sensor I purchased was supposed to go at the front but does not actually fit anywhere that I can see. Am I missing something?