B2146 Cadillac 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
- B2146 Cadillac 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 B2146 Cadillac Description
What are the Possible Causes of the DTC B2146 Cadillac?
- 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 B2146 Cadillac?
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 B2146 Cadillac 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 B2146 Cadillac Code
1. What are common symptoms of OBDII code B2146 in a Cadillac related to the outside rearview mirror position sensor input voltage being low?
The common symptoms include erratic movement of the outside rearview mirrors, mirrors not adjusting properly, or mirror adjustment controls not responding.
2. What are potential causes of the OBDII code B2146 in a Cadillac indicating low input voltage from the outside rearview mirror position sensor?
Possible causes include a faulty mirror position sensor, damaged wiring or connectors in the mirror system, or issues with the mirror control module.
3. How can I diagnose the cause of OBDII code B2146 in a Cadillac indicating low voltage from the outside mirror position sensor?
To diagnose the issue, you can use a multimeter to test the voltage at the mirror position sensor, inspect the wiring and connectors for damage, and scan the mirror control module for any related fault codes.
4. What are some repair tips for resolving OBDII code B2146 in a Cadillac related to the outside mirror sensor input voltage being low?
Repair tips may include replacing the faulty mirror position sensor, repairing damaged wiring or connectors, resetting the mirror control module, or recalibrating the mirror system.
5. Can I drive my Cadillac with OBDII code B2146 indicating low input voltage from the outside mirror position sensor?
It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper functioning of the mirror adjustment system.
6. How can I reset the OBDII code B2146 in a Cadillac after resolving the low input voltage issue from the outside mirror position sensor?
You can reset the code using an OBDII scanner or by disconnecting the car battery for a few minutes to clear the error code from the vehicle's system.
7. Is it possible for the OBDII code B2146 to reappear after resetting it in a Cadillac?
If the underlying issue causing the low input voltage from the mirror sensor is not properly addressed, the code may reappear after resetting. It is important to thoroughly diagnose and repair the problem.
8. Are there any recalls or technical service bulletins related to OBDII code B2146 in Cadillac vehicles?
Check with your local Cadillac dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific OBDII code in your vehicle model.
9. Can extreme weather conditions affect the occurrence of OBDII code B2146 in a Cadillac due to low outside mirror position sensor voltage?
Extreme weather conditions such as extreme heat or cold may impact the performance of the mirror position sensor and wiring, potentially leading to the occurrence of this OBDII code. Inspecting and maintaining the mirror system can help prevent issues.
10. Is it recommended to seek professional help to diagnose and repair OBDII code B2146 in a Cadillac related to the outside mirror position sensor input voltage being low?
If you are not experienced with automotive diagnostics and repairs, it is recommended to consult a qualified mechanic or dealership to accurately diagnose and resolve the issue with the outside mirror position sensor.
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