Enter the error code and car brand
Interaction between electronic units
Code: U2101 - The main control unit (ECU - Engine Control Unit) is having trouble partially waking up due to a communication issue.
DTC U2101 PEUGEOT
15.09.2025
5287
1 minute of reading
Video for "Error u2101" on YouTube
The following error codes are often searched for
Comments on the article