P1404 Mitsubishi Code - EGR Position Sensor Rationality Closed
Quick Answer
The P1404 code for Mitsubishi vehicles refers to an issue with the Exhaust Gas Recirculation (EGR) position sensor rationality being closed. Common causes include Faulty EGR position sensor, Malfunctioning EGR valve, Vacuum leaks in the EGR system. 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
- P1404 Mitsubishi indicates EGR Position Sensor Rationality Closed.
- Common causes
- Common causes include Faulty EGR position sensor, Malfunctioning EGR valve, Vacuum leaks in the EGR system.
- 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 P1404 Mitsubishi Description
The P1404 code for Mitsubishi vehicles refers to an issue with the Exhaust Gas Recirculation (EGR) position sensor rationality being closed. The EGR system is responsible for recirculating a portion of the engine's exhaust gases back into the combustion chamber to reduce harmful emissions. The EGR position sensor is a crucial component that monitors the position of the EGR valve to ensure it is functioning correctly.
Common Causes of P1404 Mitsubishi
- Faulty EGR position sensor
- Malfunctioning EGR valve
- Vacuum leaks in the EGR system
- Electrical issues with EGR system components
- Clogged EGR passages
Symptoms of P1404 Mitsubishi
- Check engine light illuminated
- Decreased fuel efficiency
- Rough idling or engine hesitation
- Stalling
- Failed emissions tests
How to Fix P1404 Mitsubishi
- Diagnose the issue by using a scan tool to read the code and inspecting the EGR system components for any visible damage or faults.
- Test the EGR position sensor and EGR valve for proper operation using a multimeter or other diagnostic tools.
- Check the vacuum lines and electrical connections associated with the EGR system for leaks or loose connections.
- Clean or replace the EGR valve and sensor if necessary, and clear the code from the ECM.
- Test drive the vehicle to ensure the issue has been resolved and the check engine light does not reappear.
Cost to Fix P1404 Mitsubishi
The typical repair costs for addressing a P1404 code on a Mitsubishi vehicle can range from $200 to $500, including parts and labor. However, specific diagnosis time, parts costs, and labor rates can vary depending on the location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate based on the specific circumstances. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops may offer more competitive prices.
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Frequently Asked Questions about P1404 Mitsubishi Code
1. What does the OBDII code P1404 mean for a Mitsubishi?
The P1404 code indicates an issue with the Exhaust Gas Recirculation (EGR) position sensor, specifically that the sensor detects an incorrect or "closed" position when it shouldn't.
2. What are the common symptoms of the P1404 code in a Mitsubishi?
Symptoms may include poor engine performance, rough idling, decreased fuel efficiency, the check engine light turning on, and increased emissions.
3. What causes the P1404 code to trigger in a Mitsubishi?
Common causes include a stuck EGR valve, carbon buildup in the EGR system, a faulty EGR position sensor, or wiring and electrical issues related to the sensor.
4. Can I drive my Mitsubishi with the P1404 code active?
While the car may still be drivable, continuing to drive with this code can lead to reduced performance, higher emissions, and potential engine damage over time. It’s best to address the issue promptly.
5. How can I fix the P1404 code on a Mitsubishi?
Possible fixes include cleaning the EGR valve and passages, replacing a faulty EGR valve or position sensor, and inspecting or repairing wiring and electrical connections.
6. How do I clean the EGR valve to fix the P1404 code?
Remove the EGR valve, clean it with carburetor cleaner to remove carbon buildup, and ensure the valve moves freely before reinstalling it.
7. Could a faulty EGR position sensor alone cause the P1404 code?
Yes, a malfunctioning EGR position sensor can send incorrect signals to the engine control module (ECM), triggering the P1404 code.
8. How do I diagnose the P1404 code in my Mitsubishi?
Use an OBDII scanner to confirm the code, inspect the EGR valve for clogging or sticking, check the EGR position sensor for faults, and examine the wiring for damage or loose connections.
9. How much does it cost to repair the P1404 code on a Mitsubishi?
Repairs can range from $100 to $400, depending on whether the EGR valve, position sensor, or wiring needs replacement or cleaning.
10. Can a clogged EGR system cause other issues besides the P1404 code?
Yes, a clogged EGR system can lead to increased emissions, engine knocking, overheating, and reduced fuel efficiency.
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