AutoCodes – Generic – B2253

B2253 Code - Right Key Cylinder Switch Fault

Quick Answer

The driver or passenger door key switch signal circuits provide input to the Driver Door Module (DDM) or Passenger Door Module (PDM) when the driver or passenger door lock cylinder is rotated to the UNLOCK position. Common causes include Faulty Right Key Cylinder Switch, Right Key Cylinder Switch harness is open or shorted, Right Key Cylinder 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: B2253 indicates Right Key Cylinder Switch Fault.
Common causes: Common causes include Faulty Right Key Cylinder Switch, Right Key Cylinder Switch harness is open or shorted, Right Key Cylinder 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 5,404

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 B2253 Description

The driver or passenger door key switch signal circuits provide input to the Driver Door Module (DDM) or Passenger Door Module (PDM) when the driver or passenger door lock cylinder is rotated to the UNLOCK position. This input allows the door module to detect a door UNLOCK request. The door module provides power and ground to the door key switch. When the door lock cylinder is rotated to the UNLOCK position, a ground is supplied through the door key switch to the signal circuit, which is pulled low. When the DDM detects low voltage on the driver door key switch signal circuit, it sends a message on the serial data line to the PDM to UNLOCK the passenger door. When the PDM detects low voltage on the passenger door key switch signal circuit, it sends a message on the serial data line to the DDM to UNLOCK the driver door. The messages sent on the serial data line are also used by other systems to execute certain functions. The DDM and PDM monitor the signal circuits to determine how long the ground has been applied. If the DDM or PDM detects that the ground is applied for greater than 20 seconds, a Diagnostic Trouble Code (DTC) is set.

OBDII Code B2253 - Right Key Cylinder Switch Fault - AutoCodes.com — B2253 Code - Right Key Cylinder Switch Fault

What does this mean?

What are the Possible Causes of the DTC B2253?

Faulty Right Key Cylinder Switch
Right Key Cylinder Switch harness is open or shorted
Right Key Cylinder Switch circuit poor electrical connection
Faulty Passenger Door Module (PDM)

How to Fix the DTC B2253?

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 B2253 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.

Need more information about the B2253 code?

Need more information on how to fix the B2253 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2253 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2253 Buick — Right Key Cylinder Switch Fault
B2253 Cadillac — Right Key Cylinder Switch Fault
B2253 Chevrolet — Right Key Cylinder Switch Fault
B2253 GMC — Right Key Cylinder Switch Fault

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 B2253 Code

1. What are the common symptoms of OBDII code B2253 (Right Key Cylinder Switch Fault)?

- Common symptoms include issues with starting the vehicle, difficulty turning the key in the ignition, and the key getting stuck in the ignition.

2. What are the possible causes of OBDII code B2253?

- The code B2253 can be caused by a faulty key cylinder switch, damaged wiring or connectors related to the switch, or a problem with the key itself.

3. How can I diagnose the Right Key Cylinder Switch Fault (B2253) in my vehicle?

- To diagnose B2253, you can use an OBDII scanner to read the fault code. Additionally, inspect the key cylinder switch and its wiring for any visible damage.

4. Can I still drive my vehicle with OBDII code B2253 present?

- It is not recommended to drive your vehicle with code B2253 present, as it can lead to potential issues with starting the vehicle or the key getting stuck in the ignition.

5. How can I repair OBDII code B2253 on my vehicle?

- Repairing OBDII code B2253 may involve replacing the faulty key cylinder switch, repairing or replacing damaged wiring or connectors, or reprogramming the key if necessary.

6. Is it possible to reset OBDII code B2253 without fixing the underlying issue?

- While you can clear the code temporarily with an OBDII scanner, it is important to address the root cause of the issue to prevent it from reoccurring.

7. Are there any DIY tips for troubleshooting OBDII code B2253 at home?

- You can try lubricating the key cylinder switch and checking for any loose or damaged wiring as initial troubleshooting steps for code B2253.

8. Can weather or temperature affect the occurrence of OBDII code B2253?

- Extreme weather conditions or temperature changes can potentially worsen the symptoms associated with code B2253, especially if there is moisture affecting the key cylinder switch.

9. How much does it typically cost to repair OBDII code B2253 at a repair shop?

- The cost of repairing OBDII code B2253 can vary depending on the labor rates and parts needed, but it generally ranges from $100 to $300 at a repair shop.

10. Is OBDII code B2253 a common issue in specific vehicle makes or models?

- OBDII code B2253 can be more common in some vehicle makes and models that have key cylinder switch design flaws or wiring issues. It is recommended to check for any known recalls or technical service bulletins related to this code in your specific vehicle.