AutoCodes – RAM – B19F9 RAM

B19F9 RAM Code - Left Rear Window Switch Circuit Stuck

Quick Answer

The Left Rear Door Module monitors the Left Rear Window Switch Circuit. Common causes include Faulty Left Rear Window Switch, Left Rear Window Switch harness is open or shorted, Left Rear Window 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: B19F9 RAM indicates Left Rear Window Switch Circuit Stuck.
Common causes: Common causes include Faulty Left Rear Window Switch, Left Rear Window Switch harness is open or shorted, Left Rear Window 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 721

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 Aug 05, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B19F9 RAM Description

The Left Rear Door Module monitors the Left Rear Window Switch Circuit. The Left Rear Door Module sets the OBDII codes when the Left Rear Window Switch circuit is held below 3.2 volts for over 15 seconds.

OBDII Code B19F9 RAM - Left Rear Window Switch Circuit Stuck - AutoCodes.com — B19F9 RAM Code - Left Rear Window Switch Circuit Stuck

What does this mean?

What are the Possible Causes of the DTC B19F9 RAM?

Faulty Left Rear Window Switch
Left Rear Window Switch harness is open or shorted
Left Rear Window Switch circuit poor electrical connection
Faulty Left Rear Door Module

How to Fix the DTC B19F9 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 B19F9 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 B19F9 RAM Code

1. What are the common symptoms of OBDII code B19F9 (RAM titled Left Rear Window Switch Circuit Stuck)?

The common symptoms include the left rear window not responding to the switch commands, the window getting stuck in one position, or erratic window movement.

2. What are the possible causes of OBDII code B19F9?

The code B19F9 can be triggered by a faulty left rear window switch, damaged wiring or connectors in the circuit, or a malfunctioning window regulator.

3. How can I diagnose the issue related to code B19F9?

You can start by inspecting the left rear window switch for any physical damage. Checking the wiring and connectors for loose connections or damage is also recommended. Using a multimeter to test the continuity in the circuit can help pinpoint the issue.

4. What are some repair tips for resolving code B19F9?

If the left rear window switch is faulty, replacing it with a new one is a common repair solution. Repairing or replacing damaged wiring or connectors in the circuit can also resolve the issue. In some cases, recalibrating the window regulator may be necessary.

5. Can code B19F9 be cleared/reset without repairs?

Clearing the code without addressing the underlying issue may temporarily remove the warning light, but the problem will persist. It is recommended to diagnose and repair the root cause to prevent further issues with the left rear window operation.

6. Is it safe to continue driving with OBDII code B19F9 present?

Driving with code B19F9 may not pose an immediate safety risk, but it can lead to inconvenience if the left rear window becomes inoperable. It is best to address the issue promptly to ensure the proper functioning of the window.

7. Can a DIY enthusiast fix OBDII code B19F9 at home?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair code B19F9 at home. However, if you are unsure about electrical systems or lack experience, seeking professional help is advisable.

8. Are there any common related codes that might accompany B19F9?

Other related codes that may accompany B19F9 include circuit malfunction codes specific to the left rear window, such as issues with power supply or communication errors.

9. How long does it typically take to repair OBDII code B19F9?

The repair time for code B19F9 can vary based on the specific cause of the issue. Simple fixes like replacing a faulty switch may take a short time, while diagnosing and repairing complex wiring problems can be more time-consuming.

10. Can extreme weather conditions affect the occurrence of code B19F9?

Extreme weather conditions, especially moisture and temperature fluctuations, can potentially worsen electrical issues leading to code B19F9. It is important to keep the vehicle protected and address any existing vulnerabilities in the electrical system.