What is "U0423 OBD Trouble Code" mean?

Asked by Feb 20, 2017 at 08:39 PM about the 2008 Mercedes-Benz M-Class ML 320 CDI 4MATIC

Question type: Maintenance & Repair

When I used BOD II scanner to scan on the car, I've got the result like that:
* U0423 - Generic
- Type:           Network - Network Date - ISO/SAE Controlled
- Description: Invalid Data Received From Instrument Panel Cluster Control Module

3 Answers

85,325

U0423 - Invalid Data Received From Instrument Panel Cluster Control Module...Possible causes; Invalid data network concerns, data is transferred within the normal inter-module message, but contains known invalid data. The transmitting module logs a DTC related to the invalid data concern. Missing message network concerns missing message concerns are logged by the module upon failure to receive a message from another module within a defined retry period...Check for other Powertrain Control Module (PCM) codes or PCM related symptoms. Diagnose all other PCM codes or PCM related symptoms first.

2 people found this helpful.
9,645

Basically what the code means is that the system can not communicate with the different modules in the vehicle and requires a different type of scanner. Bottom line. U need to take it to the dealer.

I kept getting code P007 on check engine alert. After replacing the MAF sensor, the intake ambient air sensor and checked harness still received P007, so I then ordered a new outside ambient temp sensor for my 2005 MB Sprinter Van part No AX158 because I was getting abnormal outside temp readings on my dashboard. While waiting on the new part to arrive, I ran codes again and got code U0423 but P007 was gone. Hopefully all will disappear when I get new part.

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