Engine-Codes - Generic - B2144

B2144 Code - Outside Rearview Mirror Position Sensor Input Voltage Low

- Code Popularity: 3,932 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2144?

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 B2144?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B2144 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B2144 Code Mean?

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.

B2144 Code - Outside Rearview Mirror Position Sensor Input Voltage Low

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Code B2144 Information for Specific Makes

  • B2144 Buick Outside Rearview Mirror Position Sensor Input Voltage Low
  • B2144 Cadillac Outside Rearview Mirror Position Sensor Input Voltage Low
  • B2144 Chevrolet Outside Rearview Mirror Position Sensor Input Voltage Low
  • B2144 GMC Outside Rearview Mirror Position Sensor Input Voltage Low

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