Engine-CodesRAM – B1985 RAM

B1985 RAM Code - Power Liftgate Latch Control 2 Circuit High

Quick Answer

The B1985 diagnostic trouble code (DTC) specifically refers to the Power Liftgate Latch Control 2 Circuit High. Common causes include Damaged wiring or connectors in the power liftgate latch control circuit, Malfunctioning liftgate latch control module, Faulty liftgate latch actuator. 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
B1985 RAM indicates Power Liftgate Latch Control 2 Circuit High.
Common causes
Common causes include Damaged wiring or connectors in the power liftgate latch control circuit, Malfunctioning liftgate latch control module, Faulty liftgate latch actuator.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B1985 RAM Description

The B1985 diagnostic trouble code (DTC) specifically refers to the Power Liftgate Latch Control 2 Circuit High. This code indicates that there is a high voltage condition detected in the circuit that controls the power liftgate latch. The power liftgate latch is a crucial component that allows the liftgate to open and close securely. When this circuit is experiencing a high voltage issue, it can lead to malfunctions in the operation of the power liftgate, potentially causing safety concerns and inconvenience for the vehicle owner.

OBDII Code B1985 RAM - Power Liftgate Latch Control 2 Circuit High
B1985 RAM Code - Power Liftgate Latch Control 2 Circuit High

Common Causes of B1985 RAM

  1. Damaged wiring or connectors in the power liftgate latch control circuit.
  2. Malfunctioning liftgate latch control module.
  3. Faulty liftgate latch actuator.
  4. Issues with the power supply to the circuit.
  5. Water intrusion or corrosion affecting the components of the power liftgate system.

Symptoms of B1985 RAM

  1. Power liftgate fails to open or close.
  2. Unusual noises coming from the liftgate mechanism.
  3. Power liftgate opens or closes intermittently.
  4. Dashboard warning light related to the liftgate system illuminates.
  5. Difficulty in manually operating the liftgate.

How to Fix B1985 RAM

  1. Begin by conducting a thorough visual inspection of the power liftgate latch control circuit, looking for any signs of damage or corrosion.
  2. Use a multimeter to test the voltage levels in the circuit and identify the high voltage condition.
  3. Inspect the wiring and connectors for any breaks or loose connections, repairing or replacing them as necessary.
  4. Test the liftgate latch control module and actuator to determine if they are functioning correctly, replacing them if found to be faulty.
  5. Clear the DTC from the vehicle's computer system using a diagnostic scan tool after completing the repairs and test the power liftgate to ensure proper operation.

Cost to Fix B1985 RAM

The typical repair costs for addressing a B1985 DTC related to the Power Liftgate Latch Control 2 Circuit High can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair could range from $100 to $500, with labor costs adding an additional $100 to $300. Overall, the total repair cost could fall between $200 and $800, but it's important to note that these estimates are approximate and actual costs may vary based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It's recommended to consult with a qualified mechanic or service center to obtain a more accurate cost estimate for addressing this issue.

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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 B1985 RAM Code

1. What does the OBDII code B1985 mean in a RAM vehicle?

The B1985 code indicates a "Power Liftgate Latch Control 2 Circuit High," meaning there is an electrical issue in the liftgate latch control circuit.

2. What are the common symptoms of the B1985 code?

Symptoms include the liftgate not opening or closing properly, a warning light on the dashboard, or unresponsive liftgate latch controls.

3. What causes the B1985 code to appear?

Common causes include a damaged liftgate latch motor, corroded or loose wiring, a faulty control module, or a short circuit in the latch control system.

4. Can I drive my RAM vehicle with the B1985 code?

Yes, but the power liftgate may not function properly, which could be inconvenient if you need to access the cargo area frequently.

5. How can I diagnose the B1985 code in my RAM?

Start by visually inspecting the wiring and connectors for damage or corrosion, then test the liftgate latch motor and related circuits for proper voltage and continuity.

6. How do I fix the B1985 code?

Repairs may involve replacing damaged wiring, cleaning corroded connectors, repairing or replacing the latch motor, or reprogramming the control module if necessary.

7. How much does it cost to repair the B1985 code on a RAM vehicle?

Repair costs vary but can range from $100 to $500, depending on whether the issue is with wiring, the latch motor, or the control module.

8. Can a dead battery cause the B1985 code?

A dead or weak battery can sometimes contribute to electrical issues, but it is not a common cause for this specific code.

9. Is the B1985 code specific to RAM vehicles?

No, the B1985 code can appear in other vehicles with similar power liftgate systems, but the troubleshooting and repair steps may differ.

10. Do I need a professional mechanic to fix the B1985 code?

If you're comfortable with basic electrical diagnostics and repairs, you might handle it yourself. However, a professional mechanic is recommended for more complex issues.

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