What Does B1425 Mean?
This code indicates the Body Control Module (BCM) has detected an abnormal short to ground condition in the rear right (RR) power window motor circuit. The BCM monitors voltage and current flow to the window motor and sets this code when it detects current flowing through an unintended path to ground, which can prevent normal window operation. This is a manufacturer-specific body system code that affects the rear passenger-side power window functionality.
Common Causes
40%
Damaged or pinched wiring harness between BCM and rear right window motor, often in door jamb area where wires flex
30%
Failed rear right power window motor with internal short to ground in motor windings or brushes
20%
Corroded or water-damaged window motor connector causing short circuit path to ground
10%
Failed window switch assembly with internal short or faulty BCM window motor relay/driver circuit
Diagnostic Steps
1
Step 1: Disconnect the rear right window motor connector and measure resistance between both motor terminals and ground using a digital multimeter (DMM). Expected reading should be >10k ohms or OL (open). A reading below 10 ohms indicates motor internal short to ground.
2
Step 2: With motor disconnected, inspect wiring harness from BCM to motor connector for visible damage, pinch points, or chafing, especially in door jamb flex area. Check connector terminals for corrosion, water intrusion, or damaged pins that may contact ground.
3
Step 3: Using DMM set to continuity/resistance mode, test each wire in the motor circuit from BCM connector to motor connector for short to ground. Wiggle harness while testing to reveal intermittent shorts. Expected reading should be OL (no continuity to ground).
4
Step 4: If wiring tests good, reconnect motor and monitor BCM live data while operating window. Check for excessive current draw (typically >20 amps indicates motor fault). Compare current draw to other window motors if accessible.
5
Step 5: If all previous tests pass, suspect BCM internal driver circuit failure. Test by swapping motor connectors with known-good window motor circuit (if vehicle architecture allows) to determine if fault follows motor or stays with circuit.
6
Step 6: After repair (wiring repair, motor replacement, or connector cleaning), clear codes, cycle window through full up/down operation multiple times, and verify code does not return and window operates smoothly without BCM detecting ground fault.
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected an abnormal short to ground condition in the rear right (RR) power window motor circuit. The BCM monitors voltage and current flow to the window motor and sets this code when it detects current flowing through an unintended path to groun...
The most common cause of B1425 (Power Window RR Motor Circuit Short To Ground) is: Damaged or pinched wiring harness between BCM and rear right window motor, often in door jamb area where wires flex
Typical repair costs for B1425 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 rear window operation and does not impact vehicle safety systems. Repair at convenience, but address promptly if water intrusion is suspected to prevent further electrical damage or if window is stuck in open position compromising security.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1425 to identify the root cause.
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Quick Info
Category
Body
System
Body Electrical System - Power Windows
Difficulty
Type
Manufacturer
Recommended Tools
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