AutoCodes – Ford – P0403 2001 Ford F150

P0403 2001 Ford F150 Code - Exhaust Gas Recirculation Control Circuit

Quick Answer

Early Exhaust Gas Recirculation (EGR) systems component s include and EGR Valve, and Engine Control Îœodule (ECÎœ) Controlled Vacuum Switch Valve or EGR Solenoid and an EGR Vacuum Îœodulator. Common causes include Faulty EGR volume control solenoid valve, EGR volume control solenoid valve harness is open or shorted, EGR volume control solenoid valve circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P0403 2001 Ford F150 indicates Exhaust Gas Recirculation Control Circuit .
Common causes: Common causes include Faulty EGR volume control solenoid valve, EGR volume control solenoid valve harness is open or shorted, EGR volume control solenoid valve circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 3,437

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0403 2001 Ford F150 Description

Early Exhaust Gas Recirculation (EGR) systems component s include and EGR Valve, and Engine Control Îœodule (ECÎœ) Controlled Vacuum Switch Valve or EGR Solenoid and an EGR Vacuum Îœodulator. Depending on the engine and driving conditions, the ECÎœ will control the EGR Solenoid which will operate the EGR Vacuum Îœodulator to regulate the opening and closing of the EGR Valve.
The EGR system on recently built vehicles uses a step motor to control the flow rate of EGR from exhaust manifold. This motor has four winding phases. It operates according to the output pulse signal of the ECÎœ. Two windings are turned ON and OFF in sequence. Each time an ON pulse is issued, the valve opens or closes, changing the flow rate. When no change in the flow rate is needed, the ECÎœ does not issue the pulse signal. Î‘ certain voltage signal is issued so that the valve remains at that particular opening.

OBDII Code P0403 2001 Ford F150 - Exhaust Gas Recirculation Control Circuit - AutoCodes.com — P0403 2001 Ford F150 Code - Exhaust Gas Recirculation Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0403 2001 Ford F150?

Faulty EGR volume control solenoid valve
EGR volume control solenoid valve harness is open or shorted
EGR volume control solenoid valve circuit poor electrical connection
EGR temperature sensor and circuit

How to Fix the DTC P0403 2001 Ford F150?

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 does this mean?

Code Tech Notes

This test checks the electrical function of the EGRVR solenoid. The test fails when the EGRVR circuit voltage is either too high or too low when compared to the expected voltage range. The EGR system must be enabled for the test to be completed.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0403 2001 Ford F150 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 P0403 2001 Ford F150 Code

1. What does the OBDII code P0403 mean on a 2001 Ford F150?

P0403 indicates a problem in the Exhaust Gas Recirculation (EGR) control circuit, which affects the operation of the EGR system.

2. What are the common symptoms of code P0403 on a 2001 Ford F150?

Symptoms may include a check engine light, reduced fuel efficiency, rough idle, poor engine performance, and increased emissions.

3. What causes the P0403 code on a 2001 Ford F150?

Common causes include a faulty EGR valve, damaged wiring or connectors in the EGR circuit, a failed EGR control solenoid, or a blown fuse.

4. Can driving with a P0403 code damage my 2001 Ford F150?

Driving with this code may not cause immediate damage, but it can lead to poor engine performance and increased emissions over time.

5. How do I diagnose the P0403 code on a 2001 Ford F150?

Start by inspecting the EGR valve, wiring, and connectors for damage. Use a multimeter to test the EGR control solenoid for proper operation.

6. How is the P0403 code fixed on a 2001 Ford F150?

Repairs may involve replacing the EGR valve, fixing damaged wiring or connectors, replacing the EGR control solenoid, or addressing any fuse issues.

7. Can a vacuum leak cause the P0403 code on a 2001 Ford F150?

No, a vacuum leak typically causes other codes. P0403 specifically relates to an electrical issue in the EGR control circuit.

8. How much does it cost to fix the P0403 code on a 2001 Ford F150?

Repair costs can range from $100 to $400 depending on whether the EGR valve, solenoid, or wiring needs replacement.

9. Will clearing the code P0403 fix the problem on a 2001 Ford F150?

Clearing the code may turn off the check engine light temporarily, but the underlying issue must be resolved to prevent the code from returning.

10. Can a dirty EGR valve trigger code P0403 on a 2001 Ford F150?

A dirty EGR valve is unlikely to trigger P0403 directly, as the code relates to the control circuit. However, cleaning the valve can help if it's affecting overall EGR operation.