P0404 P0404 OBD-II: Exhaust Gas Recirculation "A" Control Circuit Range/Performance
What P0404 means for you
The code indicates potential performance issues that could affect emissions and engine operation.
Symptoms
- The Check Engine Light may turn on
- There could be performance issues, like engine knocking during acceleration
- Problems may arise when the engine is under heavy load or at higher speeds
- In some instances, drivers might not notice any significant issues
Common causes
- The EGR (Exhaust Gas Recirculation) system is designed to lower combustion temperatures and emissions.
- Code P0404 is triggered when the engine control module (PCM) fails to detect the expected flow from the EGR system.
Tune it yourself
Buy a tuning tool and start remapping P0404 for your customers. We provide the accessories and the file. You keep the profit.
Start tuning
Or send us your ECU
Prefer we handle it? Send your ECU straight to us and we’ll fix it for you.
Send your ECUWhat this code means
Code P0404 signifies a malfunction in the EGR system, specifically relating to the control circuit's range or performance. The EGR system recirculates a portion of exhaust gases back into the intake manifold to reduce peak combustion temperatures and lower nitrogen oxide (NOx) emissions. If the PCM does not recognize the correct flow of exhaust gases, it activates this trouble code.
Frequently asked questions
It is not advisable to continue driving with a P0404 code, as it may lead to increased emissions and potential engine performance issues.
The repair costs for a P0404 code can vary, but typically range from $100 to $300, depending on whether the issue is with the EGR valve or the position sensor.
Common symptoms include the Check Engine Light illuminating and possible performance issues like engine knocking during acceleration.
