Toyota U1121: Lost Communication with Driver Monitor ECU
Is your scanner showing Toyota U1121?
No worries. We'll show you what it means and how to deal with it.
Toyota U1121: Lost Communication with Driver Monitor ECU
OVERVIEWWhat Does The Toyota U1121 Code Mean?
No communication from driver monitor ECU.
What Are The Potential Causes Of The Toyota U1121 Code?
- Driver monitor ECU branch wire or connector
- Power source circuit of driver monitor ECU
- Driver monitor ECU
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> INNOVA 5210
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Toyota U1121, DTCDECODE.
