AutoCodes – Generic – P155F

P155F Code - Throttle Valve Actuator 2 Limp Home Mode Initiated

Quick Answer

The Engine Control Module (ECM) monitors the Throttle Valve Actuator 2. Common causes include Faulty Throttle Valve Actuator 2, Throttle Valve Actuator 2 harness is open or shorted, Throttle Valve Actuator 2 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: P155F indicates Throttle Valve Actuator 2 Limp Home Mode Initiated.
Common causes: Common causes include Faulty Throttle Valve Actuator 2, Throttle Valve Actuator 2 harness is open or shorted, Throttle Valve Actuator 2 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 1,787

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 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P155F Description

The Engine Control Module (ECM) monitors the Throttle Valve Actuator 2. The ECM sets the OBDII code when the Throttle Valve Actuator 2 is not to factory specifications.

OBDII Code P155F - Throttle Valve Actuator 2 Limp Home Mode Initiated - AutoCodes.com — P155F Code - Throttle Valve Actuator 2 Limp Home Mode Initiated

What does this mean?

What are the Possible Causes of the DTC P155F?

Faulty Throttle Valve Actuator 2
Throttle Valve Actuator 2 harness is open or shorted
Throttle Valve Actuator 2 circuit poor electrical connection

How to Fix the DTC P155F?

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 P155F 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 P155F code?

Need more information on how to fix the P155F code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P155F code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P155F BMW — Throttle Valve Actuator 2 Limp Home Mode Initiated
P155F MINI — Throttle Valve Actuator 2 Limp Home Mode Initiated

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 P155F Code

1. What are the common symptoms of OBDII code P155F - Throttle Valve Actuator 2 Limp Home Mode Initiated?

- Common symptoms include reduced engine power, limited throttle response, and the vehicle going into "limp home mode" to protect the engine.

2. What can cause OBDII code P155F to trigger?

- The code can be triggered by issues with the throttle valve actuator 2, such as wiring faults, electronic failures, or mechanical malfunctions.

3. How can I diagnose the cause of OBDII code P155F?

- Diagnosis typically involves checking the throttle valve actuator 2 for proper operation, inspecting related wiring for damage, and using a diagnostic scanner to read live data.

4. Is it safe to continue driving with OBDII code P155F active?

- It is not recommended to continue driving with this code active, as it can lead to further damage to the engine or other components due to reduced power and performance.

5. Can I repair OBDII code P155F on my own?

- While some basic checks like inspecting wiring connections can be done by DIY enthusiasts, it is recommended to have a professional mechanic diagnose and repair this code to ensure proper resolution.

6. How much does it typically cost to repair OBDII code P155F?

- The cost of repairing this code can vary depending on the specific cause, but it can range from a few hundred to over a thousand dollars, including parts and labor.

7. Will resetting the OBDII code P155F make it go away permanently?

- Resetting the code may temporarily remove the warning light, but if the underlying issue causing the code is not addressed, it is likely to return and trigger the code again.

8. Can a dirty throttle body cause OBDII code P155F?

- While a dirty throttle body can cause performance issues, it is not a common cause for OBDII code P155F specifically. It is best to focus on checking the throttle valve actuator 2 and related components.

9. What are some preventive maintenance tips to avoid OBDII code P155F in the future?

- Regularly inspecting and maintaining the throttle valve actuator 2, ensuring proper wiring connections, and addressing any performance issues promptly can help prevent OBDII code P155F from occurring.

10. How long does it typically take to repair OBDII code P155F?

- The repair time can vary based on the specific cause of the code and the availability of parts, but it can range from a few hours to a full day at the repair shop.