Peugeot 4007 Audio System Failure

Based on your description, it appears you're experiencing a MOST (Media Oriented Systems Transport) bus fault. The symptoms you've described: audio system failure, navigation malfunction, and stored error codes, strongly suggest a disruption in the data communication between the control units on the MOST bus. Have you recently made any modifications to the audio or navigation system?

MOST bus fault, huh? Sounds nasty! Nah, haven't touched the audio or nav system since I bought the car. So, if it's a dodgy control unit messing things up, how would I even figure out which one's the culprit without ripping the whole dashboard apart? Is there some magic trick to pinpoint the problem?

Diagnosing a MOST bus fault requires a systematic approach using specialized diagnostic equipment capable of reading data transmitted via the automotive protocol. As the MOST bus connects multiple control units, a fault in one unit can disrupt the entire system. Therefore, a proper diagnostic scan can identify the specific control unit causing the communication breakdown. Unfortunately, without the appropriate tools and expertise, pinpointing the faulty unit can be exceptionally challenging. I would advise taking your Peugeot 4007 to a qualified workshop for professional diagnostics and repair.

Okay, sounds like I'm out of my depth here. A trip to the shop it is then. Thanks for the clarification; I appreciate you confirming my suspicions. Turns out it was indeed a faulty control unit on the MOST bus; cost me 1000€ to fix, but at least the tunes are back. Cheers!