AutoCodes – Generic – P174A

P174A Code - Valve 3 In The Sub-Gearbox 1 Electric Fault

Quick Answer

The Engine Control Module (ECM) monitors the Valve 3 In The Sub-Gearbox 1. Common causes include Faulty Valve 3 In The Sub-Gearbox 1, Valve 3 In The Sub-Gearbox 1 harness is open or shorted, Valve 3 In The Sub-Gearbox 1 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: P174A indicates Valve 3 In The Sub-Gearbox 1 Electric Fault.
Common causes: Common causes include Faulty Valve 3 In The Sub-Gearbox 1, Valve 3 In The Sub-Gearbox 1 harness is open or shorted, Valve 3 In The Sub-Gearbox 1 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 8,231

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 Jan 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P174A Description

The Engine Control Module (ECM) monitors the Valve 3 In The Sub-Gearbox 1. The ECM sets the OBDII code when the Valve 3 In The Sub-Gearbox 1 is not to factory specifications.

OBDII Code P174A - Valve 3 In The Sub-Gearbox 1 Electric Fault - AutoCodes.com — P174A Code - Valve 3 In The Sub-Gearbox 1 Electric Fault

What does this mean?

What are the Possible Causes of the DTC P174A?

Faulty Valve 3 In The Sub-Gearbox 1
Valve 3 In The Sub-Gearbox 1 harness is open or shorted
Valve 3 In The Sub-Gearbox 1 circuit poor electrical connection

How to Fix the DTC P174A?

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 P174A 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 P174A code?

Need more information on how to fix the P174A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P174A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P174A Audi — Valve 3 In The Sub-Gearbox 1 Electric Fault
P174A Volkswagen — Valve 3 In The Sub-Gearbox 1 Electric Fault

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 P174A Code

1. What are the common symptoms of OBDII code P174A (Valve 3 In The Sub-Gearbox 1 Electric Fault)?

The common symptoms of P174A may include transmission shifting issues, harsh shifting, engine stalling, and illuminated Check Engine light.

2. What are the possible causes of OBDII code P174A?

Possible causes of P174A include faulty valve 3 in the sub-gearbox 1, wiring issues, electrical faults, or a malfunctioning transmission control module.

3. How serious is OBDII code P174A?

P174A can cause drivability issues and potentially lead to further damage if left unrepaired. It is recommended to address the issue promptly to prevent more severe transmission problems.

4. Can I continue driving with OBDII code P174A present?

It is not advisable to continue driving with P174A present, as it can lead to transmission issues and potentially unsafe driving conditions. It is best to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose OBDII code P174A?

Diagnosing P174A typically involves using a professional OBDII scanner to retrieve the code, inspecting the affected components, checking the wiring, and performing a thorough transmission system diagnosis.

6. How can OBDII code P174A be repaired?

Repairing P174A may involve replacing the faulty valve 3 in the sub-gearbox 1, repairing any wiring issues, addressing electrical faults, or reprogramming the transmission control module.

7. Can a DIY enthusiast fix OBDII code P174A at home?

While some DIY enthusiasts may be able to address simpler transmission-related issues, diagnosing and repairing P174A may require specialized tools, knowledge, and experience. It is recommended to consult a professional mechanic for this specific fault.

8. How much does it cost to fix OBDII code P174A?

The cost of repairing P174A can vary depending on the root cause of the issue, the extent of the repair needed, and labor rates in your area. It is advisable to obtain quotes from several reputable mechanics to compare costs.

9. Will resetting the OBDII code P174A make it go away permanently?

Simply resetting the code may temporarily clear the Check Engine light, but if the underlying issue causing P174A is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause for a permanent fix.

10. How can I prevent OBDII code P174A from occurring in the future?

To prevent OBDII code P174A, it is essential to perform regular maintenance on your vehicle, including checking the transmission system, addressing any electrical issues promptly, and ensuring proper care of the vehicle's components.