AutoCodes – Generic – P2845

P2845 Code - Shift Fork 'A' Position Sensor Incorrect Neutral Position Indicated

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 Common causes include Outdated Transmission Control Module (TCM) program (Reprogram TCM), Faulty Transmission Control Module (TCM), Faulty Transmission Assembly.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: P2845 indicates Shift Fork 'A' Position Sensor Incorrect Neutral Position Indicated.
Common causes: Common causes include Outdated Transmission Control Module (TCM) program (Reprogram TCM), Faulty Transmission Control Module (TCM), Faulty Transmission Assembly.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 15,434

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 P2845 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 P2845 - Shift Fork 'A' Position Sensor Incorrect Neutral Position Indicated - AutoCodes.com — P2845 Code - Shift Fork 'A' Position Sensor Incorrect Neutral Position Indicated

What does this mean?

What are the Possible Causes of the DTC P2845?

Outdated Transmission Control Module (TCM) program (Reprogram TCM)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

How to Fix the DTC P2845?

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 P2845 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 P2845 code?

Need more information on how to fix the P2845 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2845 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2845 Ford — Shift Fork 'A' Position Sensor Incorrect Neutral Position Indicated
P2845 Nissan — Shift Fork 'A' Position Sensor Incorrect Neutral Position Indicated

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 P2845 Code

What does OBDII code P2845 mean?

Code P2845 indicates that the transmission control module (TCM) has detected an incorrect neutral position for Shift Fork 'A' based on data from the position sensor.

What are the common symptoms of code P2845?

Symptoms may include erratic shifting, inability to engage certain gears, transmission stuck in neutral, reduced performance, or the illumination of the check engine light.

What causes code P2845 to trigger?

Common causes include a faulty shift fork position sensor, damaged or worn shift fork components, wiring or connector issues, or a malfunctioning transmission control module.

Can driving with code P2845 cause further damage?

Yes, continuing to drive with this issue may lead to further transmission damage or unsafe driving conditions due to erratic gear operation.

How is code P2845 diagnosed?

A mechanic will use an OBDII scanner to verify the code, inspect the shift fork position sensor and wiring, and test the transmission system for mechanical or electrical faults.

Can I fix code P2845 myself?

If you're experienced with automotive repairs, you might be able to inspect and replace a faulty sensor or repair damaged wiring. However, internal transmission repairs are best left to professionals.

How much does it cost to repair code P2845?

Repair costs vary depending on the issue. Replacing a shift fork position sensor may cost $100–$300, while internal transmission repairs can range from $500 to over $2,000.

Does a software update fix code P2845?

In some cases, a TCM software update may resolve the issue if it’s caused by incorrect calibration. Consult your dealership or mechanic for guidance.

Can low transmission fluid cause code P2845?

While uncommon, low or dirty transmission fluid can contribute to improper sensor readings or mechanical issues, so it’s worth checking the fluid level and condition.

What vehicles are commonly affected by code P2845?

This code is most commonly seen in vehicles with automated manual transmissions or dual-clutch systems. Specific makes and models vary, so consult your vehicle's service manual.