AutoCodes – Chevrolet – B2252 Chevrolet

B2252 Chevrolet Code - Left 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 Left Key Cylinder Switch, Left Key Cylinder Switch harness is open or shorted, Left 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: B2252 Chevrolet indicates Left Key Cylinder Switch Fault.
Common causes: Common causes include Faulty Left Key Cylinder Switch, Left Key Cylinder Switch harness is open or shorted, Left 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 1,178

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 B2252 Chevrolet 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 B2252 Chevrolet - Left Key Cylinder Switch Fault - AutoCodes.com — B2252 Chevrolet Code - Left Key Cylinder Switch Fault

What does this mean?

What are the Possible Causes of the DTC B2252 Chevrolet?

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

How to Fix the DTC B2252 Chevrolet?

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 B2252 Chevrolet 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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Need more information on how to fix the B2252 Chevrolet code? Get Access to Factory Service Manuals

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Get the B2252 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 B2252 Chevrolet Code

1. What are the common symptoms of OBDII code B2252 in a Chevrolet related to the Left Key Cylinder Switch Fault?

The common symptoms include issues with the ignition key not turning smoothly or getting stuck in the ignition cylinder.

2. What can cause the OBDII code B2252 to trigger in a Chevrolet?

The code B2252 is typically triggered due to a fault in the left key cylinder switch, which can be caused by worn-out key tumblers or a malfunctioning ignition cylinder.

3. How can I diagnose the Left Key Cylinder Switch Fault causing OBDII code B2252 in my Chevrolet?

Diagnosing the issue involves inspecting the ignition key for wear, checking for any debris or obstructions in the ignition cylinder, and testing the key cylinder switch for proper operation.

4. Can a faulty left key cylinder switch be repaired, or does it need to be replaced in a Chevrolet with OBDII code B2252?

In most cases, a faulty left key cylinder switch will need to be replaced to resolve the OBDII code B2252 issue in a Chevrolet.

5. Are there any DIY repair tips for fixing the Left Key Cylinder Switch Fault in a Chevrolet triggering OBDII code B2252?

While it is recommended to have a professional technician handle the repair, some DIY enthusiasts may attempt to replace the left key cylinder switch using specialized tools and following detailed instructions.

6. Is it safe to continue driving a Chevrolet with OBDII code B2252 related to the Left Key Cylinder Switch Fault?

It is not recommended to continue driving the vehicle with this fault, as it can lead to potential ignition issues or getting stranded due to the key not turning in the ignition cylinder.

7. How much does it typically cost to repair the Left Key Cylinder Switch Fault triggering OBDII code B2252 in a Chevrolet?

The cost of repairing the Left Key Cylinder Switch Fault can vary depending on the extent of the damage and whether the switch needs to be replaced. It is advisable to obtain quotes from different repair shops for a more accurate estimate.

8. Can a Chevrolet dealership service center help diagnose and repair the OBDII code B2252 related to the Left Key Cylinder Switch Fault?

Yes, Chevrolet dealership service centers have the expertise and specialized tools to diagnose and repair the Left Key Cylinder Switch Fault triggering OBDII code B2252 accurately.

9. Will resetting the OBDII code B2252 related to the Left Key Cylinder Switch Fault make the issue go away temporarily?

Resetting the code may temporarily clear the fault from the system, but if the underlying issue with the left key cylinder switch is not addressed, the code is likely to reappear.

10. What steps can I take to prevent the Left Key Cylinder Switch Fault triggering OBDII code B2252 in my Chevrolet in the future?

To prevent this issue, it is advisable to avoid forcing the key in the ignition cylinder, regularly inspect and maintain the key and ignition components, and seek prompt professional assistance if any issues arise.