AutoCodes – Cadillac – B2228 Cadillac

B2228 Cadillac Code - Mirror Left Switch Fault

Quick Answer

The driver door switch signal circuits provide inputs to the Driver Door Module (DDM) when the mirror switch is activated. Common causes include Faulty Mirror Left Switch, Mirror Left Switch harness is open or shorted, Mirror Left Switch 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: B2228 Cadillac indicates Mirror Left Switch Fault.
Common causes: Common causes include Faulty Mirror Left Switch, Mirror Left Switch harness is open or shorted, Mirror Left Switch 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.

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Code Popularity 619

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 10, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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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

What does this mean?

What are the Possible Causes of the DTC B2228 Cadillac?

Faulty Mirror Left Switch
Mirror Left Switch harness is open or shorted
Mirror Left Switch circuit poor electrical connection
Faulty Driver Door Module (DDM)

How to Fix the DTC B2228 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 B2228 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2228 Cadillac Code

1. What are the common symptoms of OBDII code B2228 for Cadillac Mirror Left Switch Fault?

The common symptoms include malfunctioning power mirrors on the left side of the vehicle, unresponsive mirror adjustment controls, and potential issues with mirror heating function.

2. What can cause the OBDII code B2228 Mirror Left Switch Fault on a Cadillac?

The code B2228 typically indicates a fault with the left-side mirror switch, wiring issues, or a problem with the mirror control module.

3. How can I diagnose the Mirror Left Switch Fault code B2228 on my Cadillac?

Diagnosing the B2228 code involves checking the left mirror switch for proper functionality, inspecting the wiring for any damage or loose connections, and testing the mirror control module.

4. Can a DIY enthusiast repair the Mirror Left Switch Fault code B2228 on a Cadillac?

DIY enthusiasts can attempt to repair the B2228 code by inspecting the left mirror switch, repairing any damaged wiring, or replacing the mirror control module if necessary. However, professional diagnostic tools may be required for accurate troubleshooting.

5. Is it safe to drive with the Mirror Left Switch Fault OBDII code B2228 on my Cadillac?

It is generally safe to drive with the B2228 code, but you may experience inconvenience due to the malfunctioning left-side mirror controls. It is recommended to address the issue promptly to ensure proper functionality of the mirrors.

6. How much does it cost to repair the Mirror Left Switch Fault code B2228 on a Cadillac?

The cost of repairing the B2228 code can vary depending on the specific cause of the issue. Repair costs may include labor charges for diagnosis and replacement of components such as the mirror switch or control module.

7. Can a faulty mirror motor cause the OBDII code B2228 Mirror Left Switch Fault on a Cadillac?

While a faulty mirror motor can sometimes cause issues with mirror adjustment, the B2228 code specifically points to a fault with the left mirror switch or related components rather than the motor itself.

8. How long does it take to repair the OBDII code B2228 Mirror Left Switch Fault on a Cadillac?

The repair time for the B2228 code can vary based on the underlying cause of the issue and the complexity of the repair. Simple fixes like replacing a faulty switch may take less time compared to diagnosing wiring issues.

9. Can extreme weather conditions trigger the Mirror Left Switch Fault code B2228 on a Cadillac?

Extreme weather conditions such as excessive heat or moisture can potentially affect the electrical components associated with the left mirror switch, leading to the triggering of the B2228 fault code.

10. Are there any preventative measures to avoid the Mirror Left Switch Fault OBDII code B2228 on a Cadillac?

Regularly inspecting the mirror controls, keeping the electrical system well-maintained, and avoiding exposure to harsh environmental conditions can help prevent issues that may trigger the B2228 fault code.