AutoCodes – Generic – P157E

P157E Code - Idle Throttle Valve Actuator 2 Short To Positive

Quick Answer

The Engine Control Module (ECM) monitors the Idle Throttle Valve Actuator 2. Common causes include Faulty Idle Throttle Valve Actuator 2, Idle Throttle Valve Actuator 2 harness is open or shorted, Idle 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: P157E indicates Idle Throttle Valve Actuator 2 Short To Positive.
Common causes: Common causes include Faulty Idle Throttle Valve Actuator 2, Idle Throttle Valve Actuator 2 harness is open or shorted, Idle 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,814

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P157E Description

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

OBDII Code P157E - Idle Throttle Valve Actuator 2 Short To Positive - AutoCodes.com — P157E Code - Idle Throttle Valve Actuator 2 Short To Positive

What does this mean?

What are the Possible Causes of the DTC P157E?

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

How to Fix the DTC P157E?

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 P157E 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 P157E code?

Need more information on how to fix the P157E code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P157E code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P157E BMW — Idle Throttle Valve Actuator 2 Short To Positive
P157E MINI — Idle Throttle Valve Actuator 2 Short To Positive

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 P157E Code

1. What are the common symptoms of OBDII code P157E (Idle Throttle Valve Actuator 2 Short To Positive)?

The common symptoms include rough idle, stalling at idle, decreased engine performance, and illuminated Check Engine Light.

2. What are the possible causes of OBDII code P157E?

Possible causes of this code include a short to positive in the wiring harness, a faulty idle throttle valve actuator, or a malfunctioning engine control module (ECM).

3. How can I diagnose the cause of OBDII code P157E?

Diagnosing this code typically involves inspecting the wiring harness for shorts, testing the idle throttle valve actuator for proper function, and checking the ECM for any faults using a diagnostic scanner.

4. Is it safe to continue driving with OBDII code P157E present?

It is not recommended to continue driving with this code active, as it can lead to further damage to engine components and potentially unsafe driving conditions.

5. Can I repair OBDII code P157E myself?

While some DIY enthusiasts may be able to address this issue, it is recommended to seek professional help to accurately diagnose and repair the underlying cause of the code.

6. How much does it typically cost to repair OBDII code P157E?

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

7. Will resetting the Check Engine Light resolve OBDII code P157E?

Simply resetting the Check Engine Light will not fix the underlying issue causing the code. It is important to diagnose and address the root cause to prevent the code from reoccurring.

8. Can a faulty idle throttle valve actuator cause other issues besides triggering OBDII code P157E?

Yes, a faulty idle throttle valve actuator can cause other issues such as erratic idling, poor engine performance, and reduced fuel efficiency.

9. How long does it typically take to repair OBDII code P157E?

The repair time for this code can vary depending on the exact cause and complexity of the repair needed. It could take anywhere from a few hours to a full day or more to complete the repair.

10. Are there any preventive measures to avoid OBDII code P157E in the future?

Regular maintenance, such as checking and cleaning throttle components, inspecting wiring harnesses for damage, and addressing any engine performance issues promptly, can help prevent the recurrence of this code.