B1600 Buick Code - Mirror Motor Vertical Circuit
Quick Answer
The Driver Door Module (DDM) or Passenger Door Module (PDM) controls the mirror horizontal and vertical motors through the use of bi-directional motor controls. Common causes include Faulty Driver/Passenger Rearview Mirror Motor, Driver/Passenger Rearview Mirror Motor harness is open or shorted, Driver/Passenger Rearview Mirror Motor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B1600 Buick indicates Mirror Motor Vertical Circuit.
- Common causes
- Common causes include Faulty Driver/Passenger Rearview Mirror Motor, Driver/Passenger Rearview Mirror Motor harness is open or shorted, Driver/Passenger Rearview Mirror Motor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B1600 Buick Description
Horizontal controls operate in the same manner with the mirror motor horizontal control circuit supplying voltage or ground and the mirror motor common control circuit supplying voltage or ground to the mirror horizontal motor when the mirror is commanded right and left.
What are the Possible Causes of the DTC B1600 Buick?
- Faulty Driver/Passenger Rearview Mirror Motor
- Driver/Passenger Rearview Mirror Motor harness is open or shorted
- Driver/Passenger Rearview Mirror Motor circuit poor electrical connection
- Faulty Driver Door Module (DDM) or Passenger Door Module (PDM)
How to Fix the DTC B1600 Buick?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
B1600 02 Mirror Motor Vertical Circuit Short to Ground
B1600 04 Mirror Motor Vertical Circuit Open
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1600 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B1600 Buick Code
1. What are the common symptoms of OBDII code B1600 in a Buick related to the Mirror Motor Vertical Circuit?
- Common symptoms include non-functional vertical movement of the mirror, erratic mirror movement, or total mirror failure.
2. What are the possible causes of OBDII code B1600 in a Buick related to the Mirror Motor Vertical Circuit?
- Possible causes include a faulty mirror motor, damaged wiring or connectors, a blown fuse, or a malfunctioning mirror control switch.
3. How can I diagnose the issue causing OBDII code B1600 in my Buick Mirror Motor Vertical Circuit?
- Start by checking the mirror motor for proper function, inspecting the wiring and connectors for damage, testing the mirror control switch, and verifying the fuse related to the mirror circuit.
4. Is it safe to continue driving my Buick with OBDII code B1600 related to the Mirror Motor Vertical Circuit?
- It is generally safe to continue driving, but it is recommended to address the issue promptly to ensure proper functionality of the mirror for safety and convenience.
5. Can I repair OBDII code B1600 in my Buick Mirror Motor Vertical Circuit on my own?
- Depending on your experience and tools, you may be able to repair the issue yourself by troubleshooting the mirror motor, wiring, connectors, and fuse. Otherwise, seeking professional help is advised.
6. How much does it typically cost to repair OBDII code B1600 in a Buick Mirror Motor Vertical Circuit?
- The cost of repair can vary based on the underlying cause of the issue. It may range from a simple fix like replacing a fuse to a more complex repair involving the mirror motor or wiring, potentially costing a few hundred dollars.
7. Are there any preventive measures to avoid encountering OBDII code B1600 in my Buick Mirror Motor Vertical Circuit?
- Regularly inspecting and maintaining the mirrors, wiring, and control switch can help prevent issues related to the Mirror Motor Vertical Circuit.
8. Can extreme weather conditions affect the occurrence of OBDII code B1600 in a Buick Mirror Motor Vertical Circuit?
- Extreme weather conditions, such as extreme heat or cold, can potentially impact the functionality of the mirror motor and associated components, leading to the occurrence of the B1600 code.
9. Will resetting the OBDII system clear the B1600 code related to the Mirror Motor Vertical Circuit in my Buick?
- Resetting the OBDII system may clear the code temporarily, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is important to diagnose and repair the problem to prevent code recurrence.
10. How long does it typically take to repair OBDII code B1600 in a Buick Mirror Motor Vertical Circuit?
- The repair time can vary depending on the exact cause of the issue. Simple fixes like replacing a fuse can be done quickly, while more complex repairs involving the mirror motor or wiring may take longer, potentially a few hours to a day.
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