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Engine-Codes – RAM – B1972 RAM

B1972 RAM Code - Power Liftgate Latch Release Ratchet Primary Switch Performance

Quick Answer

The B1972 code indicates a performance issue with the primary switch responsible for the power liftgate latch release in certain vehicles, particularly those equipped with a power liftgate system. Common causes include A faulty primary switch that has worn out or failed, Corroded or damaged wiring in the harness connected to the liftgate switch, A malfunctioning body control module (BCM) that fails to process the switch input correctly. 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
B1972 RAM indicates Power Liftgate Latch Release Ratchet Primary Switch Performance.
Common causes
Common causes include A faulty primary switch that has worn out or failed, Corroded or damaged wiring in the harness connected to the liftgate switch, A malfunctioning body control module (BCM) that fails to process the switch input correctly.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 21, 2024
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Code B1972 RAM Description

The B1972 code indicates a performance issue with the primary switch responsible for the power liftgate latch release in certain vehicles, particularly those equipped with a power liftgate system. This code is triggered when the vehicle's onboard diagnostic system detects that the switch is not functioning within the specified parameters. The power liftgate system is designed to provide convenience for users by allowing them to open and close the rear hatch with minimal effort, often via a button on the key fob or inside the vehicle.

OBDII Code B1972 RAM - Power Liftgate Latch Release Ratchet Primary Switch Performance
B1972 RAM Code - Power Liftgate Latch Release Ratchet Primary Switch Performance

Common Causes of B1972 RAM

  1. A faulty primary switch that has worn out or failed.
  2. Corroded or damaged wiring in the harness connected to the liftgate switch.
  3. A malfunctioning body control module (BCM) that fails to process the switch input correctly.
  4. Mechanical obstructions or damage within the liftgate assembly itself.
  5. Software issues or glitches in the vehicle's electronic control systems.

Symptoms of B1972 RAM

  1. The power liftgate does not respond to the switch or key fob commands.
  2. Intermittent operation of the liftgate, opening or closing erratically.
  3. Warning lights or messages on the dashboard indicating a liftgate malfunction.
  4. Unusual noises coming from the liftgate mechanism when attempting to operate it.
  5. The liftgate opens or closes partially, requiring manual intervention.

How to Fix B1972 RAM

  1. Diagnostic Testing: Begin by using a diagnostic scanner to confirm the B1972 code and check for any other related codes that may provide additional context.
  2. Visual Inspection: Inspect the liftgate switch and wiring harness for signs of damage, corrosion, or loose connections. Pay special attention to the electrical contacts.
  3. Switch Replacement: If the switch is found to be faulty, replace it with a new one. Ensure that the new switch is compatible with the vehicle's make and model.
  4. Wiring Repair: If any wiring issues are detected, repair or replace the damaged sections of the harness to ensure proper electrical connectivity.
  5. Reprogramming/Resetting: After repairs, it may be necessary to reset the BCM or reprogram it to recognize the new switch, ensuring that the system functions correctly.

Cost to Fix B1972 RAM

The typical repair costs for addressing a B1972 code can range from $150 to $600, depending on the specific repairs needed. This estimate includes parts such as a new liftgate switch (which can cost between $50 and $200) and labor costs. Labor rates at auto repair shops can vary widely based on location, vehicle make and model, and engine type. Most shops charge between $80 and $150 per hour; however, rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower rates. It is advisable to check local rates for a more precise estimate and to obtain multiple quotes for the best pricing.

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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 B1972 RAM Code

1. What are the common symptoms of OBDII code B1972 RAM related to the Power Liftgate Latch Release Ratchet Primary Switch Performance?

- Common symptoms include the power liftgate failing to latch or unlatch properly, intermittent issues with the liftgate operation, and a warning light on the dashboard.

2. What are the possible causes of OBDII code B1972 RAM for the Power Liftgate Latch Release Ratchet Primary Switch Performance?

- The code can be triggered by a faulty power liftgate latch release ratchet primary switch, wiring issues, a malfunctioning liftgate control module, or a mechanical problem with the liftgate mechanism.

3. How can I diagnose the cause of OBDII code B1972 RAM for the Power Liftgate Latch Release Ratchet Primary Switch Performance?

- Diagnosis typically involves inspecting the power liftgate latch release mechanism, checking the wiring for any damage or loose connections, and using a diagnostic scanner to retrieve specific fault codes.

4. Can I still use my power liftgate if OBDII code B1972 RAM is present?

- It is not recommended to use the power liftgate if the code is present, as it may lead to safety issues and further damage to the liftgate system. It is advisable to address the issue promptly.

5. How can I repair OBDII code B1972 RAM for the Power Liftgate Latch Release Ratchet Primary Switch Performance?

- Repair options may include replacing the faulty power liftgate latch release ratchet primary switch, repairing any damaged wiring, resetting the liftgate control module, or addressing any mechanical issues with the liftgate.

6. Is it safe to drive my vehicle with OBDII code B1972 RAM related to the Power Liftgate Latch Release Ratchet Primary Switch Performance?

- It is generally safe to drive the vehicle with this code, but it is important to address the underlying issue promptly to prevent any potential safety hazards or further damage to the liftgate system.

7. Can OBDII code B1972 RAM be cleared/reset without fixing the underlying issue?

- While the code can be cleared/reset using a diagnostic scanner, it is not recommended to do so without addressing the root cause, as the issue is likely to recur and may lead to ongoing problems with the power liftgate.

8. How much does it typically cost to repair OBDII code B1972 RAM for the Power Liftgate Latch Release Ratchet Primary Switch Performance?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve parts and labor costs for replacing the switch, repairing wiring, or addressing other related components.

9. Can a DIY enthusiast fix OBDII code B1972 RAM for the Power Liftgate Latch Release Ratchet Primary Switch Performance?

- Depending on the skill level and access to tools, some DIY enthusiasts may be able to address this issue by following repair guides or videos specific to their vehicle make and model.

10. How often does OBDII code B1972 RAM occur in vehicles with power liftgates?

- This code is relatively uncommon but may occur in vehicles equipped with power liftgates, especially in older models or those with high mileage where components may be more prone to wear and tear.

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