B2144 Buick Code - Outside Rearview Mirror Position Sensor Input Voltage Low
Quick Answer
The Memory Mirror Module (MMM) receives input from mirror position sensors during these functions: memory recall, memory seat, and easy exit. Common causes include Faulty Outside Rearview Mirror Motor, Outside Rearview Mirror Motor harness is open or shorted, Outside 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
- B2144 Buick indicates Outside Rearview Mirror Position Sensor Input Voltage Low.
- Common causes
- Common causes include Faulty Outside Rearview Mirror Motor, Outside Rearview Mirror Motor harness is open or shorted, Outside 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 B2144 Buick Description
What are the Possible Causes of the DTC B2144 Buick?
- Faulty Outside Rearview Mirror Motor
- Outside Rearview Mirror Motor harness is open or shorted
- Outside Rearview Mirror Motor circuit poor electrical connection
- Faulty Memory Mirror Module (MMM)
How to Fix the DTC B2144 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2144 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 B2144 Buick Code
1. What does the OBDII code B2144 mean on a Buick?
B2144 indicates that the outside rearview mirror position sensor is reporting a voltage level that is lower than the acceptable range.
2. What are the common symptoms of the B2144 code?
Symptoms may include the side mirror not adjusting or returning to its memory position correctly and possible illumination of the check engine or warning light.
3. What causes the B2144 code to appear?
Common causes include a faulty mirror position sensor, damaged wiring or connectors, or an issue with the mirror control module.
4. Can I still drive my Buick with the B2144 code active?
Yes, the vehicle is still drivable, but the side mirror adjustment or memory functions may not work properly, which can affect visibility and safety.
5. How do I diagnose the B2144 code on my Buick?
Start by checking the mirror position sensor wiring and connectors for damage. Use a multimeter to test the voltage at the sensor and inspect for any physical obstructions in the mirror assembly.
6. How can I fix the B2144 code on a Buick?
Repairs may involve replacing the faulty mirror position sensor, repairing damaged wiring or connectors, or recalibrating the mirror control module.
7. What tools are needed to diagnose and repair the B2144 code?
You may need an OBDII scanner, a multimeter, and basic hand tools to access and inspect the mirror assembly and its wiring.
8. Is recalibration necessary after fixing the B2144 code?
In some cases, the mirror control module may need to be recalibrated using a diagnostic tool after repairs are completed.
9. How much does it cost to fix the B2144 code on a Buick?
Repair costs can vary but typically range from $100 to $300, depending on whether the issue is with the sensor, wiring, or control module.
10. Can a software update fix the B2144 code?
In rare instances, a software update for the mirror control module may resolve the issue, but this is less common than physical repairs.
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