AutoCodes – GMC – B2242 GMC

B2242 GMC Code - Memory 1 Switch Fault

Quick Answer

The driver door switch signal circuits provide input to the Driver Door Module (DDM) when the memory 1 or memory 2 select switch is activated. Common causes include Faulty Memory 1 Switch, Memory 1 Switch harness is open or shorted, Memory 1 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: B2242 GMC indicates Memory 1 Switch Fault.
Common causes: Common causes include Faulty Memory 1 Switch, Memory 1 Switch harness is open or shorted, Memory 1 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 582

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 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2242 GMC Description

The driver door switch signal circuits provide input to the Driver Door Module (DDM) when the memory 1 or memory 2 select switch is activated. These inputs allow the DDM to detect a memory function recall request. The DDM provides power and ground to the memory switches. When a memory select switch is activated, ground is supplied through the memory select switch to the signal circuit, which is pulled low. When the DDM detects low voltage on the signal circuit, it will activate the memory functions and also send a message on the serial data line to other modules responsible for memory recall functions. The DDM monitors the signal circuits to determine how long the 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 B2242 GMC - Memory 1 Switch Fault - AutoCodes.com — B2242 GMC Code - Memory 1 Switch Fault

What does this mean?

What are the Possible Causes of the DTC B2242 GMC?

Faulty Memory 1 Switch
Memory 1 Switch harness is open or shorted
Memory 1 Switch circuit poor electrical connection
Faulty Driver Door Module (DDM)

How to Fix the DTC B2242 GMC?

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 B2242 GMC 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 B2242 GMC Code

1. What are the common symptoms of OBDII code B2242 GMC (Memory 1 Switch Fault)?

The common symptoms of code B2242 include difficulty starting the vehicle, intermittent electrical issues, and malfunctioning dashboard displays.

2. What causes the OBDII code B2242 GMC to trigger?

The B2242 code is typically triggered by a faulty memory switch in the vehicle's electronic control module (ECM).

3. How can I diagnose the Memory 1 Switch Fault associated with code B2242?

Diagnosing the Memory 1 Switch Fault involves using an OBDII scanner to retrieve the specific trouble code, followed by inspecting the memory switch and related wiring for any signs of damage or corrosion.

4. Can a DIY enthusiast repair the Memory 1 Switch Fault causing code B2242?

If you have experience in automotive electrical systems, you may be able to replace the faulty memory switch yourself. However, it's recommended to consult a professional mechanic for accurate diagnosis and repair.

5. Are there any temporary fixes for the Memory 1 Switch Fault code B2242?

Temporary fixes such as resetting the ECM by disconnecting the battery may clear the code temporarily, but the issue is likely to resurface until the underlying problem is resolved.

6. How much does it typically cost to repair the Memory 1 Switch Fault related to code B2242?

The cost of repairing the Memory 1 Switch Fault can vary depending on the extent of the damage and the labor rates in your area. Expect to pay anywhere from $100 to $300 for parts and labor.

7. Can driving with the OBDII code B2242 (Memory 1 Switch Fault) cause further damage to the vehicle?

Continued driving with the B2242 code may lead to more severe electrical issues and potential damage to other components connected to the memory switch.

8. Is it safe to ignore the OBDII code B2242 GMC (Memory 1 Switch Fault) warning light?

Ignoring the B2242 warning light is not recommended, as it indicates a fault in the vehicle's electronic system that may impact its performance and reliability.

9. How long does it typically take to repair the Memory 1 Switch Fault triggering code B2242?

The repair time for the Memory 1 Switch Fault can vary depending on the accessibility of the memory switch and the complexity of the repair process. It usually takes a professional mechanic around 1-2 hours to complete the repair.

10. Can a dealership or auto repair shop reset the OBDII code B2242 (Memory 1 Switch Fault) without fixing the underlying issue?

Resetting the B2242 code without addressing the root cause, such as a faulty memory switch, will only temporarily clear the warning light and will not solve the underlying problem.