B1D20 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1D20 – Mirror Vertical Motor Control Circuit High

 

B1D20 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1D20 Possible Causes

 

Faulty Mirror Motor,Mirror Motor harness is open or shorted,Mirror Motor circuit poor electrical connection,Faulty Memory Mirror Module

 

B1D20 Description

 

When the Memory Mirror Module senses voltage present on the Mirror Vertical Motor Driver circuit, when there should not be, for over 10ms, this Diagnostic Trouble Code (DTC) will set.