AutoCodes – RAM – B1672 RAM

B1672 RAM Code - Power Liftgate Latch Release Ratchet Primary Switch Performance

Quick Answer

The Primary Ratchet Switch must remain closed when the liftgate is fully open or between full open and closed positions. Common causes include Binding Liftgate, Faulty Liftgate Ajar Switch, Liftgate Ajar Switch harness is open or shorted. 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: B1672 RAM indicates Power Liftgate Latch Release Ratchet Primary Switch Performance.
Common causes: Common causes include Binding Liftgate, Faulty Liftgate Ajar Switch, Liftgate Ajar Switch harness is open or shorted.
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 673

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 Jun 13, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1672 RAM Description

The Primary Ratchet Switch must remain closed when the liftgate is fully open or between full open and closed positions. The switch will open when the liftgate is fully closed and latched. This switch indicates when the latch is in primary position. It is open when in primary and closed when out of primary. The OBDII code sets when the ratchet switch remains open during a power release operation or when the primary ratchet switch is detected open when the latch is unlatched (liftgate open).

OBDII Code B1672 RAM - Power Liftgate Latch Release Ratchet Primary Switch Performance - AutoCodes.com — B1672 RAM Code - Power Liftgate Latch Release Ratchet Primary Switch Performance

What does this mean?

What are the Possible Causes of the DTC B1672 RAM?

Binding Liftgate
Faulty Liftgate Ajar Switch
Liftgate Ajar Switch harness is open or shorted
Liftgate Ajar Switch circuit poor electrical connection
Faulty Power Liftgate Latch
Faulty Power Liftgate Module

How to Fix the DTC B1672 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 B1672 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 B1672 RAM Code

1. What does OBDII code B1672 mean on a RAM vehicle?

B1672 indicates an issue with the Power Liftgate Latch Release Ratchet Primary Switch Performance, meaning the switch is not functioning as expected.

2. What are common symptoms of code B1672 in a RAM vehicle?

Symptoms may include the liftgate not opening or closing properly, unusual noises from the liftgate mechanism, or a warning light on the dashboard.

3. What causes the B1672 code to appear in a RAM?

This code can be triggered by a faulty primary switch, damaged wiring or connectors, misaligned latch components, or an issue with the power liftgate control module.

4. Can I still drive my RAM with the B1672 code?

Yes, you can still drive the vehicle, but the power liftgate functionality may be impaired, causing inconvenience or difficulty accessing the rear cargo area.

5. How do I diagnose the B1672 code?

Start by inspecting the liftgate latch switch, wiring, and connectors for damage or corrosion. Use a scan tool to monitor switch performance and test the power liftgate system.

6. What are possible fixes for the B1672 code?

Repairs may include replacing the liftgate latch release ratchet switch, repairing damaged wiring, cleaning corroded connectors, or reprogramming the liftgate control module.

7. How much does it cost to fix the B1672 code?

Repair costs vary but typically range from $100 to $400, depending on whether the primary switch or additional components need replacement.

8. Can a weak battery cause the B1672 code?

Yes, a weak or failing battery can cause electrical issues, including improper operation of the liftgate system, potentially triggering the code.

9. Is it necessary to reprogram the liftgate control module after fixing the B1672 code?

In some cases, reprogramming or resetting the control module may be required to ensure proper functionality of the power liftgate system.

10. How can I prevent the B1672 code from returning?

Regular maintenance, such as keeping the liftgate components clean and inspecting wiring and connectors for damage, can help prevent this code from recurring.