Jan 7, 2023 · What Does the P0404 Code Mean? The P0404 diagnostic trouble code means that the Exhaust Gas Recirculation Circuit Range/Performance fault has occurred. This generic trouble code comes from the powertrain control module (PCM) and indicates that the Exhaust Gas Recirculation (EGR) valve is not functioning correctly.

Apr 11, 2022 · When P0404 is triggered, it means that the PCM has been told that the valve is performing in a way that is outside of its specified parameters. More specifically, the PCM has …

When something goes bad with the EGR valve circuit, your powertrain control module (PCM) triggers the P0404 code. This article explains the P0404 code meaning, causes, symptoms, and fixes. What Does the P0404 Code Mean? How serious is the P0404 Code? What repairs can fix the P0404 Code? How to Prevent the P0404 Code? Can I drive with code P0404?

There may be no symptoms of a P0404 DTC other than the MIL (malfunction indicator lamp) or check engine light. However, Exhaust Gas Recirculation systems are inherently problematic due to carbon buildup in the intake manifold, etc. This normal buildup can lodge in an EGR valve, holding it open when it should be closed.

Mar 24, 2024 · What does the OBDII code P0404 mean in a Chevrolet vehicle? - OBDII code P0404 indicates a problem with the Exhaust Gas Recirculation (EGR) system's open position performance. 3. What are the possible causes of OBDII code P0404 in a Chevrolet?

More specifically, the P0404 code can mean the valve is closed when it should be open or vice-versa or that the EGR passage is restricted. It’s a generic code that indicates that the engine control module (ECM) has detected that the exhaust gas recirculation isn’t what the ECM expected to see.

Mar 24, 2024 · - OBDII code P0404 indicates a problem with the Exhaust Gas Recirculation (EGR) circuit, specifically related to range/performance issues. 3. What are the possible causes of OBDII code P0404? - Possible causes of code P0404 include a faulty EGR valve, clogged EGR passages, wiring issues, vacuum leaks, or a malfunctioning EGR position sensor. 4.

Feb 10, 2025 · When troubleshooting a P0404 code, thoroughness is key as the EGR valve isn’t the only suspect. Read on to learn how serious a code P0404 is and how to properly …

Code P0404 usually indicates that there is a carbon build-up somewhere in the lines, or on other occasions, a bad EGR valve. Increased nitrogen oxide emission may indicate a failing EGR valve. It’s possible to find no observable symptoms of a P0404 code aside from a check engine light.

For most makes and models of vehicles, a trouble code P0404 is the result of an improper reading from your exhaust gas recirculation valve. How do I fix trouble code P0404? Here are some common symptoms, causes and solutions that will help you restore your vehicle’s performance and remove this error code.