AutoCodes – Cadillac – B2239 Cadillac

B2239 Cadillac Code - Right Door Un-Lock Switch Fault

Quick Answer

The driver or passenger door switch signal circuits provide inputs to the Driver Door Module (DDM) or Passenger Door Module (PDM) when a door lock switch is activated to the LOCK or UNLOCK position. Common causes include Faulty Right Door Lock Switch, Right Door Lock Switch harness is open or shorted, Right Door Lock 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: B2239 Cadillac indicates Right Door Un-Lock Switch Fault.
Common causes: Common causes include Faulty Right Door Lock Switch, Right Door Lock Switch harness is open or shorted, Right Door Lock 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 979

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 B2239 Cadillac Description

The driver or passenger door switch signal circuits provide inputs to the Driver Door Module (DDM) or Passenger Door Module (PDM) when a door lock switch is activated to the LOCK or UNLOCK position. These inputs allow the door module to detect a door LOCK or UNLOCK request. The door modules provide power and ground to the door lock switches. When a door lock switch is activated to the LOCK or UNLOCK position, ground is supplied through the door lock switch to the signal circuit, which is pulled low. When the door module detects low voltage on the signal circuit, it will command the door latches to LOCK or UNLOCK. If the driver door switch is activated, the DDM will LOCK or UNLOCK the driver door latch and also send a message on the serial data line to the PDM to LOCK or UNLOCK the passenger door latch. If the passenger door switch is activated, the PDM will LOCK or UNLOCK the passenger door latch and also send a message on the serial data line to the DDM to LOCK or UNLOCK the driver door latch. The door modules monitor the signal circuits to determine how long the ground has been applied. If the door module detects that a ground is applied for greater than 20 seconds, a Diagnostic Trouble Code (DTC) is set.

OBDII Code B2239 Cadillac - Right Door Un-Lock Switch Fault - AutoCodes.com — B2239 Cadillac Code - Right Door Un-Lock Switch Fault

What does this mean?

What are the Possible Causes of the DTC B2239 Cadillac?

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

How to Fix the DTC B2239 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 B2239 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 B2239 Cadillac Code

1. What are common symptoms of OBDII code B2239 in a Cadillac indicating a Right Door Un-Lock Switch Fault?

- Common symptoms include the right door not unlocking properly when using the switch, intermittent issues with door unlocking, or the door lock switch not working at all.

2. What could cause the OBDII code B2239 to trigger in a Cadillac related to the Right Door Un-Lock Switch Fault?

- The code may be triggered due to a malfunction in the right door unlock switch, wiring issues in the door circuit, a faulty door lock actuator, or a problem with the body control module.

3. How can I diagnose the OBDII code B2239 in a Cadillac for a Right Door Un-Lock Switch Fault?

- Diagnosis involves checking the right door unlock switch for proper operation, inspecting the wiring for any damage or loose connections, testing the door lock actuator, and scanning the body control module for fault codes.

4. What are some repair tips for resolving OBDII code B2239 in a Cadillac related to the Right Door Un-Lock Switch Fault?

- Repair tips include repairing or replacing the right door unlock switch, repairing any damaged wiring, replacing the door lock actuator if necessary, and reprogramming or replacing the body control module if it's found to be faulty.

5. Can I continue driving my Cadillac with the OBDII code B2239 indicating a Right Door Un-Lock Switch Fault?

- It is not recommended to continue driving with this fault, as it may lead to issues with unlocking the right door, potentially causing safety concerns or inconvenience.

6. Is it possible to reset the OBDII code B2239 in a Cadillac related to the Right Door Un-Lock Switch Fault?

- Resetting the code is possible using an OBDII scanner, but it's important to diagnose and fix the underlying issue causing the fault code to prevent it from reoccurring.

7. Are there any recalls or technical service bulletins related to OBDII code B2239 in Cadillacs for a Right Door Un-Lock Switch Fault?

- It's recommended to check with a Cadillac dealership or online resources for any recalls or technical service bulletins related to this specific fault code to see if there are known issues or remedies provided by the manufacturer.

8. How long does it typically take to repair OBDII code B2239 in a Cadillac for a Right Door Un-Lock Switch Fault?

- The repair time can vary depending on the exact cause of the fault, but it generally takes a few hours to diagnose and fix issues related to the right door unlock switch fault.