AutoCodes – Lincoln – P1858 Lincoln

P1858 Lincoln Code - Transmission Transfer Case Contact Plate 'D' Circuit Failure

Quick Answer

The Transmission Control Module (TCM) monitors the Transmission Transfer Case Contact Plate 'D'. Common causes include Faulty Transfer Case Shift Motor, Transfer Case Shift Motor harness is open or shorted, Transfer Case Shift Motor 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
P1858 Lincoln indicates Transmission Transfer Case Contact Plate 'D' Circuit Failure.
Common causes
Common causes include Faulty Transfer Case Shift Motor, Transfer Case Shift Motor harness is open or shorted, Transfer Case Shift Motor 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 848
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 31, 2020
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Code P1858 Lincoln Description

The Transmission Control Module (TCM) monitors the Transmission Transfer Case Contact Plate 'D'. The TCM sets the OBDII code when the Transmission Transfer Case Contact Plate 'D' is not to factory specifications.
OBDII Code P1858 Lincoln - Transmission Transfer Case Contact Plate 'D' Circuit Failure - AutoCodes.com
P1858 Lincoln Code - Transmission Transfer Case Contact Plate 'D' Circuit Failure

What are the Possible Causes of the DTC P1858 Lincoln?

  • Faulty Transfer Case Shift Motor
  • Transfer Case Shift Motor harness is open or shorted
  • Transfer Case Shift Motor circuit poor electrical connection

How to Fix the DTC P1858 Lincoln?

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 P1858 Lincoln 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.

Need more information about the P1858 Lincoln code?

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Need Help with the Code?

Get the P1858 Lincoln code diagnosed by a professional: Find a repair shop in your area

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 P1858 Lincoln Code

1. What are the common symptoms of OBDII code P1858 in a Lincoln related to Transmission Transfer Case Contact Plate 'D' Circuit Failure?

- Common symptoms include difficulty shifting gears, slipping or jerking transmission, and the vehicle getting stuck in a single gear.

2. What are the possible causes of OBDII code P1858 in a Lincoln indicating Transmission Transfer Case Contact Plate 'D' Circuit Failure?

- The code may be triggered by a faulty transfer case contact plate, damaged wiring or connectors, a malfunctioning transfer case motor, or a problem with the transfer case control module.

3. How can I diagnose the OBDII code P1858 in a Lincoln linked to Transmission Transfer Case Contact Plate 'D' Circuit Failure?

- Diagnosis involves using a scan tool to read the code, inspecting the transfer case contact plate and related components, checking for damaged wiring, and testing the transfer case motor and control module.

4. What are some repair tips for resolving OBDII code P1858 in a Lincoln due to Transmission Transfer Case Contact Plate 'D' Circuit Failure?

- Repair tips include repairing or replacing the faulty transfer case contact plate, repairing damaged wiring or connectors, testing and replacing the transfer case motor if necessary, and reprogramming the transfer case control module.

5. Can I continue driving my Lincoln with OBDII code P1858 related to Transmission Transfer Case Contact Plate 'D' Circuit Failure?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the transmission system. It is best to address the issue promptly.

6. What is the typical cost to repair OBDII code P1858 in a Lincoln caused by Transmission Transfer Case Contact Plate 'D' Circuit Failure?

- The cost of repairs can vary depending on the exact cause of the issue and whether any components need to be replaced. Repairs may range from a few hundred to over a thousand dollars.

7. Are there any DIY fixes for OBDII code P1858 in a Lincoln associated with Transmission Transfer Case Contact Plate 'D' Circuit Failure?

- While some basic troubleshooting like checking for loose connections or damaged wiring can be done DIY, diagnosing and repairing the specific components related to this code may require professional expertise.

8. How urgent is it to address OBDII code P1858 in a Lincoln due to Transmission Transfer Case Contact Plate 'D' Circuit Failure?

- It is important to address this code promptly to prevent potential transmission damage and ensure the safe operation of the vehicle. Ignoring the issue can lead to more costly repairs in the future.

9. Can weather conditions or rough driving terrain contribute to triggering OBDII code P1858 in a Lincoln related to Transmission Transfer Case Contact Plate 'D' Circuit Failure?

- Extreme weather conditions or rough driving terrain can potentially contribute to the failure of components related to this code, such as the transfer case contact plate or wiring, making regular inspections important for preventive maintenance.

10. Is there a way to prevent OBDII code P1858 in a Lincoln associated with Transmission Transfer Case Contact Plate 'D' Circuit Failure from recurring in the future?

- Regular maintenance, including checking the transfer case components, keeping an eye on the transmission system's performance, and addressing any issues promptly, can help prevent the recurrence of this code in the future.

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