AutoCodes – Generic – P1856

P1856 Code - Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery

Quick Answer

P1856 indicates Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery. 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: P1856 indicates Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery.
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.

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Code Popularity 41,779

How popular is this code, among other codes? Medium

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 Sep 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1856 Description

OBDII Code P1856 - Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery - AutoCodes.com — P1856 Code - Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery

What does this mean?

What are the Possible Causes of the DTC P1856?

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 P1856?

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 P1856 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 P1856 code?

Need more information on how to fix the P1856 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1856 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1856 Ford — Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery

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 P1856 Code

1. What are the common symptoms of OBDII code P1856?

- Common symptoms include a warning light on the dashboard, transmission shifting issues, and potential stalling of the vehicle.

2. What can cause the Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery fault code?

- This code is typically triggered by a short circuit to the battery in the contact plate 'C' of the transmission transfer case.

3. How serious is the P1856 fault code?

- The P1856 code should be addressed promptly as it can lead to transmission problems and affect the drivability of the vehicle.

4. Can I continue driving with OBDII code P1856 present?

- It is not recommended to drive the vehicle with this fault code present, as it can potentially cause further damage to the transmission system.

5. How can I diagnose the cause of OBDII code P1856?

- Diagnosing this code usually involves a thorough inspection of the transmission transfer case contact plate 'C' and its wiring for any signs of damage or short circuits.

6. What are some DIY repair tips for fixing the Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery issue?

- DIY repair tips may include checking and repairing any damaged wiring, ensuring proper contact in the transmission transfer case, and resetting the fault code.

7. Will resetting the fault code make OBDII code P1856 disappear permanently?

- Simply resetting the fault code may temporarily clear the warning light, but the underlying issue causing the code will need to be addressed to prevent it from reoccurring.

8. Can a faulty battery cause OBDII code P1856 to appear?

- While a faulty battery can sometimes cause electrical issues, OBDII code P1856 is more likely related to a short circuit in the transmission transfer case contact plate 'C'.

9. How much does it typically cost to repair OBDII code P1856 at a mechanic or dealership?

- Repair costs for this fault code can vary depending on the extent of the damage and the labor rates of the service provider. It is recommended to obtain quotes from different mechanics or dealerships.

10. Is it necessary to replace the transmission transfer case contact plate 'C' when dealing with code P1856?

- Depending on the severity of the short circuit and the extent of the damage, replacement of the contact plate 'C' may be necessary to resolve the issue permanently.