B2147 GMC 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 GMC 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 GMC Description
What are the Possible Causes of the DTC B2147 GMC?
- 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 GMC?
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 GMC 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 GMC Code
1. What are the common symptoms of OBDII code B2147 GMC?
The common symptoms of OBDII code B2147 GMC include erratic movement of the outside rearview mirror, mirror position not adjusting properly, and the mirror not responding to controls.
2. What causes the OBDII code B2147 GMC to trigger?
The OBDII code B2147 GMC is triggered when the outside rearview mirror position sensor input voltage is detected to be high, indicating a potential issue with the sensor or its wiring.
3. How can I diagnose the OBDII code B2147 GMC?
Diagnosing the OBDII code B2147 GMC involves checking the wiring and connections of the outside rearview mirror position sensor, testing the sensor's voltage output, and inspecting for any signs of damage or corrosion.
4. Can a faulty outside rearview mirror position sensor be repaired?
In some cases, a faulty outside rearview mirror position sensor may be repairable by fixing wiring issues, cleaning connectors, or replacing the sensor itself if necessary.
5. Are there any quick fixes for the OBDII code B2147 GMC?
Quick fixes for the OBDII code B2147 GMC include checking and resetting the mirror position manually, ensuring proper power supply to the mirror, and clearing the code with an OBDII scanner.
6. Is it safe to drive with the OBDII code B2147 GMC active?
It is generally safe to drive with the OBDII code B2147 GMC active, but it is recommended to address the issue promptly to ensure proper functioning of the outside rearview mirror system.
7. How much does it typically cost to repair the OBDII code B2147 GMC?
The cost to repair the OBDII code B2147 GMC can vary depending on the root cause of the issue, but it may range from a simple wiring repair to a sensor replacement, with costs varying accordingly.
8. Can I reset the OBDII code B2147 GMC without fixing the underlying issue?
Resetting the OBDII code B2147 GMC without fixing the underlying issue may temporarily clear the code, but the problem will likely persist and trigger the code again until the root cause is addressed.
9. How long does it take to repair the OBDII code B2147 GMC?
The time it takes to repair the OBDII code B2147 GMC can vary based on the complexity of the issue, but simpler fixes like cleaning connectors can be done quickly, while sensor replacement may take longer.
10. Will the OBDII code B2147 GMC affect the vehicle's performance?
The OBDII code B2147 GMC is related to the outside rearview mirror system and should not directly affect the vehicle's performance, but addressing the issue promptly is still recommended for safety and convenience.
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