What Does B2224 Mean?
This code indicates the Body Control Module (BCM) has detected an electrical circuit malfunction in the passenger side power mirror motor drive circuit. The BCM monitors the motor current draw and voltage feedback when mirror adjustments are commanded, and has identified an open circuit, short circuit, or excessive resistance preventing proper mirror operation. This is strictly a comfort/convenience system fault affecting only the passenger side mirror adjustment functionality.
Common Causes
40%
Faulty passenger side mirror motor assembly with internal winding failure or brush wear
30%
Damaged or corroded wiring harness between BCM and passenger mirror, including connector terminals
20%
Water intrusion or corrosion in passenger mirror connector causing high resistance or open circuit
10%
Failed Body Control Module internal mirror drive circuit or relay
Diagnostic Steps
1
Step 1: Perform visual inspection of passenger mirror connector and wiring harness for obvious damage, corrosion, water intrusion, or disconnected terminals. Check connector pins for bent, backed-out, or corroded conditions.
2
Step 2: Using a digital multimeter, check for battery voltage at the mirror motor connector with ignition on while commanding mirror movement through the mirror switch. Verify ground circuit integrity with resistance test (should be less than 1 ohm to chassis ground).
3
Step 3: Disconnect mirror connector and measure resistance across mirror motor terminals while manually moving mirror adjustment gear. Typical reading should be 5-50 ohms depending on manufacturer. Infinite resistance indicates open motor windings.
4
Step 4: If wiring and mirror motor test good, backprobe BCM connector at mirror drive circuit pins and test for proper voltage output (typically 12V) when mirror adjustment is commanded. Compare to known-good driver side circuit operation.
5
Step 5: Perform wiggle test on wiring harness between door jamb and mirror while monitoring voltage/resistance to identify intermittent opens or shorts caused by flexing.
6
Step 6: After repairs, clear codes and cycle mirror through full range of motion in all directions, then recheck for code reset to verify repair success.
Estimated Repair Cost
$75 - $450
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected an electrical circuit malfunction in the passenger side power mirror motor drive circuit. The BCM monitors the motor current draw and voltage feedback when mirror adjustments are commanded, and has identified an open circuit, short circu...
The most common cause of B2224 (Mirror Passenger Drive Circuit Failure) is: Faulty passenger side mirror motor assembly with internal winding failure or brush wear
Typical repair costs for B2224 range from $75 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving as this only affects passenger mirror adjustment convenience feature. Does not impact vehicle safety systems, though proper mirror adjustment is recommended for optimal visibility and safe lane changes.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2224 to identify the root cause.
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Quick Info
Category
Body
System
Body Electrical System - Power Mirrors
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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