AutoCodes – Generic – P073D

P073D Code - Unable to Engage Neutral

Quick Answer

The Transmission Control Module (TCM) monitors the transmission gear. Common causes include Transmission mechanical problems, Faulty transmission valve body, Faulty Transmission Control Module (TCM). 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: P073D indicates Unable to Engage Neutral.
Common causes: Common causes include Transmission mechanical problems, Faulty transmission valve body, Faulty Transmission Control Module (TCM).
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 11,624

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 May 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P073D Description

The Transmission Control Module (TCM) monitors the transmission gear. The TCM sets the OBDII code when the transmission is not at the gear the TCM commands.

OBDII Code P073D - Unable to Engage Neutral - AutoCodes.com — P073D Code - Unable to Engage Neutral

What does this mean?

What are the Possible Causes of the DTC P073D?

Transmission mechanical problems
Faulty transmission valve body
Faulty Transmission Control Module (TCM)
Transmission Control Module (TCM) harness is open or shorted
Transmission Control Module (TCM) circuit poor electrical connection

How to Fix the DTC P073D?

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 P073D 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 P073D code?

Need more information on how to fix the P073D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P073D 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 P073D Code

1. What does the OBDII code P073D mean?

P073D indicates that the transmission control module (TCM) is unable to engage the neutral gear due to a fault or malfunction.

2. What are the common symptoms of a P073D code?

Symptoms may include difficulty shifting into or out of neutral, the transmission getting stuck in a specific gear, and the check engine light or transmission warning light illuminating.

3. What causes the P073D code to appear?

Common causes include a faulty transmission range sensor, damaged shift solenoids, low or dirty transmission fluid, electrical issues like corroded connectors, or internal transmission damage.

4. Can I drive my car with a P073D code?

Driving with this code is not recommended as it may lead to further transmission damage or unsafe driving conditions due to shifting issues.

5. How is the P073D code diagnosed?

A technician will use a scan tool to confirm the code, inspect the transmission fluid, check for electrical issues, test the shift solenoids, and perform a visual inspection of the transmission components.

6. What repairs can fix the P073D code?

Possible repairs include replacing the transmission range sensor, repairing or replacing faulty shift solenoids, cleaning or repairing electrical connections, or servicing the transmission fluid.

7. Can low transmission fluid cause a P073D code?

Yes, low or dirty transmission fluid can prevent proper gear engagement and trigger this code.

8. How much does it cost to fix the P073D code?

The repair cost varies depending on the root cause, ranging from $150 for minor fixes like fluid replacement to over $1,000 for more complex repairs like solenoid or transmission replacement.

9. Can I clear the P073D code without fixing the issue?

Clearing the code without addressing the underlying problem may cause it to return and could lead to further damage.

10. Is the P073D code specific to certain vehicle makes or models?

No, P073D is a generic OBDII code, but its specific triggers and symptoms may vary slightly between manufacturers. Always consult your vehicleâ€™s service manual for guidance.