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B2228 Cadillac Code - Mirror Left Switch Fault

- Code Popularity: 483 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2228 Cadillac?

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 Mirror Left Switch
  • Mirror Left Switch harness is open or shorted
  • Mirror Left Switch circuit poor electrical connection
  • Faulty Driver Door Module (DDM)
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How to Fix the DTC B2228 Cadillac?

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 B2228 Cadillac 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 B2228 Cadillac Description

The driver door switch signal circuits provide inputs to the Driver Door Module (DDM) when the mirror switch is activated. These inputs allow the DDM to detect a mirror direction request. The DDM provides both power and ground to the mirror switches. When a mirror switch is activated to the right, left, up or down position, ground is supplied through the mirror switch to the signal circuit, which is pulled low. When the DDM detects low voltage on the signal circuit, it will command the mirror to rotate in the direction selected. The DDM controls passenger mirror functions by sending mirror control messages to the Passenger Door Module (PDM) on the serial data line and the PDM then commands the passenger mirror. The DDM monitors both the driver and passenger mirror switch signal circuits to determine how long a ground has been applied. If the DDM detects that a ground is applied for greater than 20 seconds, a Diagnostic Trouble Code (DTC) is set.

OBDII Code B2228 Cadillac - Mirror Left Switch Fault - AutoCodes.com
B2228 Cadillac Code - Mirror Left Switch Fault

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