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AutoCodes - Generic - B2148

B2148 Code - Outside Rearview Mirror Position Sensor Input Voltage Low

- Code Popularity: 11,519 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2148?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • 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)
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How to Fix the DTC B2148?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2148 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B2148 Description

The Memory Mirror Module (MMM) receives input from mirror position sensors during these functions: memory recall, memory seat, and easy exit. Potentiometers in position sensors vary in resistance as motors move outside rearview mirror. MMM receives a variable voltage input depending on resistance of the potentiometer. During memory set, MMM records voltages across outside rearview mirrors. During memory recall, MMM moves outside rearview mirror motor until the voltage across each potentiometer matches recorded the voltage. During normal operation, mirror position sensors are checked against out-of-range limits. Outside rearview mirrors horizontal or vertical position sensor input voltage is less than 0.25 volts.

OBDII Code B2148 - Outside Rearview Mirror Position Sensor Input Voltage Low - AutoCodes.com
B2148 Code - Outside Rearview Mirror Position Sensor Input Voltage Low

Need More Information on the Code?

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Information for Specific Makes

  • B2148 Buick Outside Rearview Mirror Position Sensor Input Voltage Low
  • B2148 Cadillac Outside Rearview Mirror Position Sensor Input Voltage Low
  • B2148 Chevrolet Outside Rearview Mirror Position Sensor Input Voltage Low
  • B2148 GMC Outside Rearview Mirror Position Sensor Input Voltage Low

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