Diagnostic code selector
U0420 EV diagnostic code
This code exists in verified records for multiple manufacturers. Choose your vehicle maker so the report does not mix manufacturer-specific meaning, applicability or service guidance.
Mazda U0420MAZDA RADAR CRUISE CONTROL (MRCC)/SMART BRAKE SUPPORT (SBS)○ Multiple DTC's (U0XXX:00 COMMUNICATION ERROR)○ • If an aftermarket device is found connected to DLC-2, take a photo andOpen manufacturer report →Jeep U0420Invalid Data Received From Power Steering Control Module set by CADM2Open manufacturer report →