AutoCodes – Jaguar – P1507 Jaguar

P1507 Jaguar Code - Idle Air Control Under Speed Error

Quick Answer

The Idle Air Control Valve (IACV) valve assembly controls the engine idle speed and provides a dashpot function. Common causes include Faulty Idle Air Control (IAC) valve, IAC valve stuck closed, IAC valve harness is open or shorted. 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: P1507 Jaguar indicates Idle Air Control Under Speed Error.
Common causes: Common causes include Faulty Idle Air Control (IAC) valve, IAC valve stuck closed, IAC valve harness is open or shorted.
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 1,968

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1507 Jaguar Description

The Idle Air Control Valve (IACV) valve assembly controls the engine idle speed and provides a dashpot function. The IAC valve assembly meters intake air around the throttle plate through a bypass within the IAC valve assembly and throttle body. The Powertrain Control Module (PCM) determines the desired idle speed or bypass air and signals the IAC valve assembly through a specified duty cycle. The IAC valve responds by positioning the IAC valve to control the amount of bypassed air. The PCM monitors engine RPM and increases or decreases the IAC duty cycle in order to achieve the desired RPM.

OBDII Code P1507 Jaguar - Idle Air Control Under Speed Error - AutoCodes.com — P1507 Jaguar Code - Idle Air Control Under Speed Error

What does this mean?

What are the Possible Causes of the DTC P1507 Jaguar?

Faulty Idle Air Control (IAC) valve
IAC valve stuck closed
IAC valve harness is open or shorted
IAC valve circuit poor electrical connection

How to Fix the DTC P1507 Jaguar?

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 P1507 Jaguar 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.

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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 P1507 Jaguar Code

1. What are the common symptoms of OBDII code P1507 in a Jaguar related to Idle Air Control Under Speed Error?

- Common symptoms include rough idle, stalling at low speeds, and potential engine hesitation during acceleration.

2. What are the possible causes of OBDII code P1507 in a Jaguar?

- The code P1507 typically points to issues with the idle air control valve (IACV), vacuum leaks, throttle body problems, or a faulty engine control module (ECM).

3. How can I diagnose the cause of OBDII code P1507 in my Jaguar?

- Diagnosis typically involves checking the IACV operation, inspecting for vacuum leaks, testing the throttle body, and scanning the ECM for any related fault codes.

4. Can I drive my Jaguar with OBDII code P1507 present?

- It is generally not recommended to drive your Jaguar with code P1507 present, as it can lead to further engine performance issues and potential damage.

5. How can I repair OBDII code P1507 in my Jaguar?

- Repairs may involve cleaning or replacing the IACV, fixing any vacuum leaks, cleaning the throttle body, or reprogramming the ECM if necessary.

6. Are there any DIY tips for fixing OBDII code P1507 in a Jaguar?

- While some basic checks like inspecting for vacuum leaks can be done DIY, it is recommended to have a qualified mechanic diagnose and repair the issue to ensure proper resolution.

7. Will resetting the OBDII code P1507 in my Jaguar make it go away permanently?

- Resetting the code may clear it temporarily, but if the underlying issue causing P1507 is not addressed, the code is likely to reappear.

8. Can a faulty idle air control valve cause OBDII code P1507 in a Jaguar?

- Yes, a faulty idle air control valve (IACV) is a common cause of OBDII code P1507 in a Jaguar due to its role in regulating idle speed.

9. How important is it to address OBDII code P1507 promptly in a Jaguar?

- It is important to address code P1507 promptly to prevent further engine performance issues and potential damage, as unresolved idle control problems can affect overall vehicle operation.

10. Is it possible for a dirty throttle body to trigger OBDII code P1507 in a Jaguar?

- Yes, a dirty or malfunctioning throttle body can disrupt the idle air control system and potentially trigger code P1507 in a Jaguar. Regular maintenance can help prevent this issue.