P0403 1999 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 Μodule (ECΜ) Controlled Vacuum Switch Valve or EGR Solenoid and an EGR Vacuum Μodulator. 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 1999 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.
Code P0403 1999 Ford F150 Description
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 ECΜ. 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 ECΜ does not issue the pulse signal. Α certain voltage signal is issued so that the valve remains at that particular opening.
What are the Possible Causes of the DTC P0403 1999 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 1999 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0403 1999 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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Frequently Asked Questions about P0403 1999 Ford F150 Code
1. What are the common symptoms of an OBDII code P0403 in a 1999 Ford F150?
- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and the illumination of the check engine light.
2. What does the OBDII code P0403 indicate in a 1999 Ford F150?
- The code P0403 specifically relates to a malfunction in the Exhaust Gas Recirculation (EGR) Control Circuit.
3. What are the possible causes of OBDII code P0403 in a 1999 Ford F150?
- Potential causes of code P0403 include a faulty EGR valve, issues with the EGR position sensor, damaged wiring in the EGR circuit, or a malfunctioning EGR solenoid.
4. How can I diagnose the OBDII code P0403 in a 1999 Ford F150?
- Diagnosing code P0403 involves using an OBDII scanner to retrieve the code, checking the EGR valve and related components for visible damage, and testing the EGR circuit for continuity.
5. Can I continue driving my 1999 Ford F150 with an OBDII code P0403?
- It is not recommended to continue driving with an unresolved P0403 code, as it can lead to further damage to the engine and emissions system.
6. Is it possible to repair an OBDII code P0403 in a 1999 Ford F150 at home?
- Depending on your skill level and access to tools, you may be able to address a P0403 code at home by replacing the EGR valve, sensor, or solenoid, or repairing damaged wiring in the EGR circuit.
7. How much does it typically cost to repair an OBDII code P0403 in a 1999 Ford F150 at a mechanic?
- The cost of repairing a P0403 code can vary depending on the exact cause of the issue, but it may range from $150 to $500 at a mechanic, including parts and labor.
8. Will resetting the check engine light resolve the OBDII code P0403 in a 1999 Ford F150?
- Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing the P0403 code to reappear.
9. Are there any maintenance tips to prevent OBDII code P0403 in a 1999 Ford F150?
- Regularly servicing the EGR system, using high-quality fuel, and maintaining proper engine tune-ups can help prevent issues leading to code P0403.
10. Can a malfunctioning EGR system affect the overall performance of a 1999 Ford F150?
- Yes, a malfunctioning EGR system can negatively impact engine performance, fuel efficiency, and emissions control in a 1999 Ford F150, making it crucial to address code P0403 promptly.
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