AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Buick - P1404 Buick

P1404 Buick Code - Exhaust Gas Recirculation Closed Position Performance

- Code Popularity: 36,166 Views
- Repair Importance Level: 2/3
- Repair Difficulty Level: 2/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC P1404 Buick?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Carbon blockage of the pintle
  • Faulty Exhaust Gas Recirculation (EGR) valve
⚠ Does your Buick have Safety Recalls? → Check here

How to Fix the DTC P1404 Buick?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

On some models, there is a service bulletin for the P1404 code that suggests reprogramming the Powertrain Control Module (PCM) to repair the problem.

Search for P1404 Buick Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1404 Buick code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

While monitoring the Exhaust Gas Recirculation (EGR) valve pintle position the Powertrain Control Module (PCM) detected the closed position sensor voltage higher than the learned closed position voltage.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1404 Buick Description

The Powertrain Control Module (PCM) determines that the Exhaust Gas Recirculation (EGR) valve is stuck open if the actual EGR position and the learned closed EGR position vary by more than a predetermined value. The PCM tests for a stuck valve when the desired EGR position is at 0%. The PCM commands the EGR valve to 100% during certain driving conditions in order to clear a possible restriction from the EGR valve if the PCM determines that the valve is stuck open. The PCM retests for a stuck valve when the desired EGR position returns to 0%. A failure timer increments if the stuck EGR valve condition is still present. This Diagnostic Trouble Code (DTC) sets when the timer reaches a predetermined value.
OBDII Code P1404 Buick - Exhaust Gas Recirculation Closed Position Performance - AutoCodes.com
P1404 Buick Code - Exhaust Gas Recirculation Closed Position Performance

Need More Information on the Code?

Need more information on how to fix the P1404 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1404 Buick code diagnosed by a professional: Find a repair shop in your area

Code P1404 Buick comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P1404 Buick code? Have you replaced any parts?
Any information is appreciated. Thanks