B1784
Mirror Passenger Up Circuit Short To Battery
B1784 is an OBD-II diagnostic trouble code meaning: Mirror Passenger Up Circuit Short To Battery. Common causes: short circuit in wiring harness, mirror motor malfunction. Estimated repair cost: $56–167.
Symptoms
- The right mirror up adjustment does not work
- The mirror can move spontaneously
- There may be problems with other mirror functions
Causes
- Short circuit in wiring harness
- Mirror motor malfunction
- Problems in the mirror control unit
- Damage to door wiring
- BCM malfunction (rare)
How to Fix
- Check the resistance of the mirror control circuit
- Inspect the wiring harness for damage
- Check the operation of the mirror motor
- Check power and ground circuit
- Replace damaged components if necessary
- Reset the error and check the system operation
Related codes
FAQ
What does the B1784 code mean?
B1784 is an OBD-II diagnostic trouble code that indicates: Mirror Passenger Up Circuit Short To Battery
What causes a B1784 error code?
The most common causes of B1784 include: Short circuit in wiring harness; Mirror motor malfunction; Problems in the mirror control unit; Damage to door wiring.
How do I fix a B1784 diagnostic trouble code?
To fix B1784: Check the resistance of the mirror control circuit. Inspect the wiring harness for damage. Check the operation of the mirror motor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1784?
Yes, but get it checked soon
How much does it cost to fix B1784?
The estimated repair cost for B1784 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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