What Does B2272 Mean?
This code indicates the Body Control Module (BCM) has detected a fault in the power side mirror motor control circuit. The BCM monitors voltage, current, and resistance in the mirror adjustment motor circuits and has identified an open circuit, short circuit, excessive resistance, or motor failure. This affects the driver or passenger side mirror motor that provides horizontal and/or vertical adjustment.
Common Causes
40%
Failed mirror motor assembly with internal winding open or short circuit
30%
Damaged wiring harness or corroded connector pins between BCM and mirror assembly
20%
Faulty mirror switch with internal contact failure causing open or intermittent circuit
10%
BCM internal driver circuit failure or programming corruption
Diagnostic Steps
1
Step 1: Perform visual inspection of both mirror assemblies for physical damage, check all connectors at mirrors and door harness for corrosion, pushed-out pins, or moisture intrusion
2
Step 2: Using a digital multimeter, test mirror motor operation by back-probing connector with mirror switch activated - verify 12V power and ground signal are present at motor during adjustment commands in all directions
3
Step 3: Disconnect mirror assembly and perform resistance test across motor terminals (typically 15-50 ohms per motor) - compare readings between affected and working mirror motors to identify open or shorted windings
4
Step 4: Test mirror switch operation with multimeter in continuity mode across switch terminals while cycling through all mirror positions - verify proper switching action and resistance values per manufacturer specifications
5
Step 5: Inspect wiring harness through door jamb boot for broken or chafed wires caused by repeated door opening/closing - perform wiggle test while monitoring voltage signal
6
Step 6: Clear code and verify repair by actuating mirrors through full range of motion in all directions, then road test and rescan for code return
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected a fault in the power side mirror motor control circuit. The BCM monitors voltage, current, and resistance in the mirror adjustment motor circuits and has identified an open circuit, short circuit, excessive resistance, or motor failure. ...
The most common cause of B2272 (Mirror Motor Control Circuit) is: Failed mirror motor assembly with internal winding open or short circuit
Typical repair costs for B2272 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this only affects mirror adjustment convenience feature. Mirrors can typically be manually adjusted if needed for proper visibility before driving, though inability to adjust mirrors electrically may pose indirect safety concerns in certain situations requiring quick adjustment.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2272 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Body
System
Body Control and Convenience Systems
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
