Engine-CodesLincoln – P1839 Lincoln

P1839 Lincoln Code - Transfer Case Shift Motor Open Circuit

Quick Answer

The P1839 diagnostic trouble code for Lincoln vehicles indicates an open circuit in the transfer case shift motor. Common causes include Faulty transfer case shift motor, Corroded or damaged wiring connections, Blown fuse related to the transfer case shift motor. 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
P1839 Lincoln indicates Transfer Case Shift Motor Open Circuit.
Common causes
Common causes include Faulty transfer case shift motor, Corroded or damaged wiring connections, Blown fuse related to the transfer case shift motor.
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 16, 2024
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Code P1839 Lincoln Description

The P1839 diagnostic trouble code for Lincoln vehicles indicates an open circuit in the transfer case shift motor. The transfer case shift motor is responsible for engaging and disengaging the four-wheel drive system in the vehicle. An open circuit means that there is a break in the electrical connection between the transfer case shift motor and the vehicle's control module. This can prevent the motor from receiving the necessary signals to engage the four-wheel drive system, leading to issues with the vehicle's drivability and performance.

OBDII Code P1839 Lincoln - Transfer Case Shift Motor Open Circuit
P1839 Lincoln Code - Transfer Case Shift Motor Open Circuit

Common Causes of P1839 Lincoln

  1. Faulty transfer case shift motor
  2. Corroded or damaged wiring connections
  3. Blown fuse related to the transfer case shift motor
  4. Issues with the vehicle's control module
  5. Water or debris intrusion into the transfer case shift motor

Symptoms of P1839 Lincoln

  1. Difficulty shifting into four-wheel drive mode
  2. Four-wheel drive system not engaging
  3. Dashboard warning light for four-wheel drive system
  4. Reduced traction on slippery surfaces
  5. Decreased stability during cornering

How to Fix P1839 Lincoln

  1. Begin by inspecting the wiring connections and fuses related to the transfer case shift motor. Replace any damaged wiring and blown fuses.
  2. Test the transfer case shift motor to determine if it is functioning properly. If the motor is faulty, it will need to be replaced.
  3. Clear the diagnostic trouble code from the vehicle's system using a scan tool.
  4. Test the four-wheel drive system to ensure that the transfer case shift motor is engaging correctly.
  5. If the issue persists, further diagnostic testing may be required to pinpoint the exact cause of the open circuit.

Cost to Fix P1839 Lincoln

The cost of repairing an open circuit in the transfer case shift motor can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the parts for this repair can range from $200 to $500, while labor costs can add an additional $100 to $300. Keep in mind that these are rough estimates, and actual repair costs may differ based on factors such as location, vehicle make and model, and the shop's labor rates. It's recommended to consult with a qualified mechanic for a more accurate cost estimate.

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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.

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