AutoCodes – Ford – P0403 2002 Ford F150

P0403 2002 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 2002 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 5,209

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 2002 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 2002 Ford F150 - Exhaust Gas Recirculation Control Circuit - AutoCodes.com — P0403 2002 Ford F150 Code - Exhaust Gas Recirculation Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0403 2002 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 2002 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 2002 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 2002 Ford F150 Code

1. What are the common symptoms of OBDII code P0403 on a 2002 Ford F150?

The common symptoms of P0403 on a 2002 Ford F150 include rough idling, engine misfiring, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P0403 mean for a 2002 Ford F150?

OBDII code P0403 for a 2002 Ford F150 indicates a problem with the Exhaust Gas Recirculation (EGR) control circuit.

3. What are the possible causes of OBDII code P0403 on a 2002 Ford F150?

The possible causes of P0403 on a 2002 Ford F150 include a faulty EGR valve, damaged wiring or connectors in the EGR circuit, or a malfunctioning EGR position sensor.

4. How can I diagnose the OBDII code P0403 on my 2002 Ford F150?

To diagnose P0403 on a 2002 Ford F150, you can perform a visual inspection of the EGR system components, test the EGR valve and position sensor, and check for any wiring or connector issues.

5. Can I still drive my 2002 Ford F150 with the OBDII code P0403?

It is not recommended to drive your 2002 Ford F150 with the OBDII code P0403 present, as it can lead to engine performance issues and potential damage if left unresolved.

6. How can I repair OBDII code P0403 on my 2002 Ford F150?

To repair P0403 on a 2002 Ford F150, you may need to replace the EGR valve, repair any damaged wiring or connectors, or recalibrate the EGR position sensor as necessary.

7. Is it possible to reset the OBDII code P0403 on a 2002 Ford F150 without fixing the issue?

Resetting the OBDII code P0403 on a 2002 Ford F150 without addressing the underlying problem will only temporarily clear the code, as it will likely reappear once the issue is still present.

8. Will OBDII code P0403 on a 2002 Ford F150 affect the vehicle's emissions?

Yes, OBDII code P0403 on a 2002 Ford F150 can impact the vehicle's emissions by causing increased pollutants to be released into the atmosphere.

9. How much does it typically cost to repair OBDII code P0403 on a 2002 Ford F150?

The cost to repair OBDII code P0403 on a 2002 Ford F150 can vary depending on the specific issue, but it may range from $150 to $500 for parts and labor.

10. How often does OBDII code P0403 occur in a 2002 Ford F150?

OBDII code P0403 can occur in a 2002 Ford F150 due to various factors, but it is relatively common in vehicles with higher mileage or those exposed to harsh driving conditions.