Engine-Codes.com
Engine-Codes – Ford – P1520 Ford

P1520 Ford Code - Intake Manifold Runner Control Circuit Fault

Quick Answer

The P1520 Ford code indicates a fault in the Intake Manifold Runner Control (IMRC) circuit. Common causes include Faulty IMRC valve, Wiring or connector issues in the IMRC circuit, Vacuum leaks in the intake manifold. 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
P1520 Ford indicates Intake Manifold Runner Control Circuit Fault.
Common causes
Common causes include Faulty IMRC valve, Wiring or connector issues in the IMRC circuit, Vacuum leaks in the intake manifold.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 05, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1520 Ford Description

The P1520 Ford code indicates a fault in the Intake Manifold Runner Control (IMRC) circuit. The IMRC system is responsible for optimizing air flow to the engine by adjusting the length of the intake manifold runners. This helps improve performance, fuel efficiency, and emissions. When this circuit fails, it can lead to issues with engine performance and efficiency.

OBDII Code P1520 Ford - Intake Manifold Runner Control Circuit Fault
P1520 Ford Code - Intake Manifold Runner Control Circuit Fault

Common Causes of P1520 Ford

  1. Faulty IMRC valve
  2. Wiring or connector issues in the IMRC circuit
  3. Vacuum leaks in the intake manifold
  4. Carbon buildup in the intake manifold
  5. ECM (Engine Control Module) failure

Symptoms of P1520 Ford

  1. Loss of power or acceleration
  2. Rough idle or stalling
  3. Check Engine Light illuminated
  4. Poor fuel economy
  5. Engine misfires

How to Fix P1520 Ford

  1. Diagnose the issue using a scan tool to confirm the P1520 code and pinpoint the exact cause.
  2. Inspect the IMRC valve, wiring, and connectors for any damage or corrosion. Repair or replace as needed.
  3. Check for vacuum leaks in the intake manifold and repair any leaks found.
  4. Clean out any carbon buildup in the intake manifold, especially around the IMRC valve.
  5. Clear the trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1520 Ford

The cost of repairing a P1520 Ford code can vary depending on the specific cause of the issue. On average, the repair cost can range from $200 to $500, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can impact the final cost. It's recommended to get a detailed estimate from a trusted mechanic or repair shop before proceeding with the repair.

Need more information about the P1520 Ford code?

Need more information on how to fix the P1520 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1520 Ford code diagnosed by a professional: Find a repair shop in your area

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 P1520 Ford Code

No Frequently Asked Questions about P1520 Ford Code found.

Discuss the causes and fixes for P1520 Ford OBDII Code

Submit a New Comment

Code P1520 Ford comments

No comments found for this page.