B1420
Passenger Power Window Motor Circuit Short To Battery
B1420 is an OBD-II diagnostic trouble code meaning: Passenger Power Window Motor Circuit Short To Battery. Common causes: damage to the insulation of the power window circuit wires, window lift motor malfunction. Estimated repair cost: $33–167.
Symptoms
- Right front window regulator does not work
- The window regulator works continuously without pressing the button.
- Power window circuit fuse blows
- Battery discharge with ignition off
Causes
- Damage to the insulation of the power window circuit wires
- Window lift motor malfunction
- Short circuit in door wiring harness
- Damage to contacts in connectors
- Malfunction of the power window control unit
How to Fix
- Check the condition of the power window circuit fuse
- Visually inspect the wiring harness in the door for damage.
- Check the resistance of the window lift motor
- Check the integrity of the control circuit wires
- Check the operation of the power window control unit
- Replace damaged components
Related codes
FAQ
What does the B1420 code mean?
B1420 is an OBD-II diagnostic trouble code that indicates: Passenger Power Window Motor Circuit Short To Battery
What causes a B1420 error code?
The most common causes of B1420 include: Damage to the insulation of the power window circuit wires; Window lift motor malfunction; Short circuit in door wiring harness; Damage to contacts in connectors.
How do I fix a B1420 diagnostic trouble code?
To fix B1420: Check the condition of the power window circuit fuse. Visually inspect the wiring harness in the door for damage.. Check the resistance of the window lift motor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1420?
Limited driving only, diagnose soon
How much does it cost to fix B1420?
The estimated repair cost for B1420 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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