B2147 Buick Code - Outside Rearview Mirror Position Sensor Input Voltage High
Quick Answer
The Memory Mirror Module (MMM) receives inputs 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
- B2147 Buick indicates Outside Rearview Mirror Position Sensor Input Voltage High.
- 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 B2147 Buick Description
What are the Possible Causes of the DTC B2147 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 B2147 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 B2147 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 B2147 Buick Code
1. What does the OBDII code B2147 mean on a Buick?
B2147 indicates that the outside rearview mirror position sensor is detecting an input voltage that is higher than expected.
2. What are the common symptoms of code B2147 on a Buick?
Symptoms may include unresponsive or malfunctioning power mirrors, incorrect mirror position recall, or a warning light on the dashboard.
3. What causes the B2147 code to appear on a Buick?
Common causes include a faulty mirror position sensor, damaged wiring or connectors, or issues with the vehicle's control module.
4. Can I still drive my Buick with the B2147 code?
Yes, the vehicle can still be driven, but the power mirror functionality may be impaired, and ignoring the issue could lead to further electrical problems.
5. How do I diagnose the B2147 code on my Buick?
Start by inspecting the wiring and connectors for the mirror position sensor, checking for damage, loose connections, or corrosion. Use a multimeter to test the sensor voltage.
6. How do I fix the B2147 code on a Buick?
Repairs may include replacing the faulty mirror position sensor, repairing or replacing damaged wiring, or updating the vehicle’s control module software if necessary.
7. Is the B2147 code specific to Buick vehicles?
While B2147 can appear on other vehicle brands, the specific meaning and repair procedures may vary. Refer to the Buick service manual for precise information.
8. How much does it cost to fix the B2147 code on a Buick?
The cost can range from $50 to $200 if a sensor replacement is needed, but it may vary depending on labor rates and the extent of wiring repairs.
9. Can a dead battery cause the B2147 code on a Buick?
A dead or weak battery is unlikely to directly cause the code but could contribute to electrical irregularities that trigger it.
10. Do I need specialized tools to fix the B2147 code on a Buick?
Basic tools like a multimeter and an OBDII scanner are typically sufficient for diagnosing and repairing this code.
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