P1404 Mitsubishi Code - EGR Position Sensor Rationality Closed
Quick Answer
P1404 Mitsubishi indicates EGR Position Sensor Rationality Closed. Common causes include Faulty Exhaust Gas Recirculation (EGR) valve, EGR valve harness is open or shorted, EGR 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
- P1404 Mitsubishi indicates EGR Position Sensor Rationality Closed.
- Common causes
- Common causes include Faulty Exhaust Gas Recirculation (EGR) valve, EGR valve harness is open or shorted, EGR 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 P1404 Mitsubishi Description
What are the Possible Causes of the DTC P1404 Mitsubishi?
- Faulty Exhaust Gas Recirculation (EGR) valve
- EGR valve harness is open or shorted
- EGR circuit poor electrical connection
- EGR valve carbon blockage
How to Fix the DTC P1404 Mitsubishi?
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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1404 Mitsubishi 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 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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