AutoCodes – Generic – P2852

P2852 Code - Shift Fork Position Sensor 'C'/'D' Correlation

Quick Answer

There are two electric motors used to shift the gears in the transmission, on for gears 1-3-5 and one for gears R-2-4-6. Common causes include Outdated Transmission Control Module (TCM) program (Reprogram TCM), Faulty Transmission Control Module (TCM), Faulty Transmission Assembly. 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: P2852 indicates Shift Fork Position Sensor 'C'/'D' Correlation.
Common causes: Common causes include Outdated Transmission Control Module (TCM) program (Reprogram TCM), Faulty Transmission Control Module (TCM), Faulty Transmission Assembly.
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 4,866

How popular is this code, among other codes? Low

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 Feb 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2852 Description

There are two electric motors used to shift the gears in the transmission, on for gears 1-3-5 and one for gears R-2-4-6. The gear shifting is made by two shift drums connected to shift motor pinion via two ideal gears. The maximum shift force is 1500N (337 lb). The motors are integrated in the Transmission Control Module (TCM) and work independently of each other.

OBDII Code P2852 - Shift Fork Position Sensor 'C'/'D' Correlation - AutoCodes.com — P2852 Code - Shift Fork Position Sensor 'C'/'D' Correlation

What does this mean?

What are the Possible Causes of the DTC P2852?

Outdated Transmission Control Module (TCM) program (Reprogram TCM)
Faulty Transmission Control Module (TCM)
Faulty Transmission Assembly

How to Fix the DTC P2852?

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 P2852 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 P2852 code?

Need more information on how to fix the P2852 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2852 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2852 Ford — Shift Fork Position Sensor 'C'/'D' Correlation
P2852 Nissan — Shift Fork Position Sensor 'C'/'D' Correlation

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 P2852 Code

1. What are the common symptoms of OBDII code P2852 (Shift Fork Position Sensor 'C'/'D' Correlation)?

- Common symptoms include harsh shifting, delayed shifting, transmission slippage, and the transmission not engaging properly.

2. What can cause the OBDII code P2852 to trigger?

- The code can be triggered by issues with the shift fork position sensor 'C' or 'D', faulty wiring or connections, or a problem with the transmission control module.

3. How serious is the OBDII code P2852 (Shift Fork Position Sensor 'C'/'D' Correlation)?

- This code can affect the proper operation of the transmission, leading to potential drivability issues. It is recommended to address the problem promptly.

4. How can I diagnose the OBDII code P2852?

- Diagnosis typically involves using a scan tool to read the code, checking the wiring and connections related to the shift fork position sensor, and testing the sensor itself for proper operation.

5. What are some possible repair options for OBDII code P2852?

- Repair options may include replacing the faulty shift fork position sensor 'C' or 'D', repairing any damaged wiring or connections, or reprogramming the transmission control module.

6. Can I drive my vehicle with the OBDII code P2852 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further transmission issues and potential safety concerns.

7. How much does it typically cost to fix OBDII code P2852?

- The cost of repairing this code can vary depending on the underlying issue, but it may involve the cost of parts, labor, and potential diagnostic fees.

8. Can I reset the OBDII code P2852 on my own?

- While you can clear the code with a diagnostic scan tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. Are there any preventive measures to avoid OBDII code P2852 in the future?

- Regular maintenance of the transmission system, such as fluid changes and inspections, can help prevent issues that may trigger this code.

10. Is it possible to drive the vehicle to a repair shop with the OBDII code P2852?

- If the vehicle is exhibiting severe drivability issues or safety concerns, it is recommended to have it towed to a repair shop to prevent further damage.