AutoCodes – RAM – B25BD RAM

B25BD RAM Code - Left Front Door Ajar Switch Stuck Open

Quick Answer

The Drivers Door Latch contains two door ajar switches. Common causes include Faulty Left Front Door Ajar Switch, Left Front Door Ajar Switch harness is open or shorted, Left Front Door Ajar 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
B25BD RAM indicates Left Front Door Ajar Switch Stuck Open.
Common causes
Common causes include Faulty Left Front Door Ajar Switch, Left Front Door Ajar Switch harness is open or shorted, Left Front Door Ajar 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 499
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 05, 2020
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Code B25BD RAM Description

The Drivers Door Latch contains two door ajar switches. The Powertrain Control Module (PCM) receives the state (open/closed) of each switch over the CAN Bus from the Drivers Door Module (DDM) or Body Control Module (BCM) depending on the vehicles configuration. The PCM continuously monitors the functioning status of the Driver Door Ajar Switch states for the operation of certain features such as Electric Stop/Start (ESS).
OBDII Code B25BD RAM - Left Front Door Ajar Switch Stuck Open - AutoCodes.com
B25BD RAM Code - Left Front Door Ajar Switch Stuck Open

What are the Possible Causes of the DTC B25BD RAM?

  • Faulty Left Front Door Ajar Switch
  • Left Front Door Ajar Switch harness is open or shorted
  • Left Front Door Ajar Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B25BD RAM?

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 B25BD RAM 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 B25BD RAM Code

1. What does OBDII code B25BD mean?

Code B25BD indicates that the left front door ajar switch is stuck in the "open" position, preventing proper detection of the door's closed status.

2. What are the common symptoms of code B25BD?

Symptoms may include the door ajar warning light staying on, interior lights not turning off, and the vehicle thinking the door is open when it's actually closed.

3. What causes code B25BD to be triggered?

This code is typically caused by a faulty door ajar switch, damaged wiring or connectors, or physical obstruction preventing the switch from functioning properly.

4. Can code B25BD drain my car battery?

Yes, if the interior lights remain on due to the system thinking the door is open, it can drain the battery over time.

5. How can I diagnose code B25BD?

Diagnose this code by inspecting the left front door ajar switch, checking for damaged wiring or connectors, and using a multimeter to test the switch's functionality.

6. Can I drive with code B25BD active?

Yes, you can drive with this code, but it may cause inconvenience, such as constant warning lights or chimes, and could lead to battery drainage.

7. How do I fix code B25BD?

Fixing this code may involve replacing the faulty door ajar switch, repairing damaged wiring, or ensuring no physical obstructions are preventing the switch from operating.

8. How much does it cost to repair code B25BD?

Repair costs vary but typically range from $50 to $150 for parts and labor, depending on whether the switch or wiring needs replacement.

9. Can I reset code B25BD without repairing it?

You can clear the code using an OBDII scanner, but it will likely return if the underlying issue isn't resolved.

10. What tools do I need to troubleshoot code B25BD?

You'll need an OBDII scanner, a multimeter, and basic hand tools to inspect and test the door ajar switch and its wiring.

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