AutoCodes – Generic – P157D

P157D Code - Idle Throttle Valve Actuator 2

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: P157D indicates Idle Throttle Valve Actuator 2.
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.

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Code Popularity 1,375

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 P157D 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 P157D - Idle Throttle Valve Actuator 2 - AutoCodes.com — P157D Code - Idle Throttle Valve Actuator 2

What does this mean?

What are the Possible Causes of the DTC P157D?

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 P157D?

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 P157D 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 P157D code?

Need more information on how to fix the P157D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P157D code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P157D BMW — Idle Throttle Valve Actuator 2
P157D MINI — Idle Throttle Valve Actuator 2

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 P157D Code

1. What are the common symptoms of OBDII code P157D (Idle Throttle Valve Actuator 2)?

- Common symptoms include rough idling, engine stalling at idle, decreased fuel efficiency, and potential issues with acceleration.

2. What can cause the OBDII code P157D to trigger?

- The code P157D is typically triggered by a malfunction in the Idle Throttle Valve Actuator 2, which can be caused by electrical faults, mechanical issues, or sensor problems.

3. How can I diagnose the OBDII code P157D at home?

- Diagnosing the code P157D usually involves checking the wiring and connections related to the idle throttle valve actuator, inspecting the actuator itself for any signs of damage, and verifying the signal from the actuator to the engine control module.

4. Is it safe to continue driving with the OBDII code P157D present?

- It is not recommended to continue driving with the code P157D active, as it can lead to further engine problems or potential safety hazards due to unstable idling or stalling.

5. Can I reset the OBDII code P157D without fixing the underlying issue?

- While you can clear the code using an OBDII scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring and potentially causing more significant issues.

6. How much does it typically cost to repair the OBDII code P157D related to the Idle Throttle Valve Actuator 2?

- The cost of repairing the code P157D can vary depending on the specific cause of the issue, but it may involve replacing the idle throttle valve actuator, repairing wiring or connections, or recalibrating the system.

7. Are there any DIY repair tips for fixing the OBDII code P157D?

- DIY repair tips may include checking and cleaning the connections to the idle throttle valve actuator, inspecting for vacuum leaks, and ensuring proper voltage supply to the actuator.

8. Can a faulty Idle Throttle Valve Actuator 2 cause other OBDII codes to appear?

- Yes, a malfunctioning idle throttle valve actuator can cause related codes to trigger, such as P157A or P157C, which are also associated with throttle actuator issues.

9. Does the OBDII code P157D affect vehicle performance?

- Yes, the OBDII code P157D can impact vehicle performance by causing erratic idling, stalling, and potentially affecting the overall drivability of the vehicle.

10. How long does it typically take to repair the OBDII code P157D related to the Idle Throttle Valve Actuator 2?

- The repair time for the code P157D can vary based on the specific cause and complexity of the issue, but it may take anywhere from a few hours to a day for diagnosis and repair.