P0404
EGR Control Circuit Range/Performance
2001-2003 BMW 525iT E39 2.5L I6 🇨🇦
Moderate SeverityPowertrain
Description
The EGR valve is not responding as commanded by the PCM.
Symptoms
- Check Engine Light
- Rough idle
- Stalling
- Poor performance
Common Causes
- Carbon restricting EGR valve movement
- Faulty position sensor in EGR
- EGR valve mechanically stuck
Diagnostic Steps
- Command EGR open/closed with scan tool and monitor position
- Check for carbon restricting movement
- Test position sensor
Repair Notes
Clean or replace EGR valve.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0404 on Other Vehicles
Common Questions
What does code P0404 mean on a 2001-2003 BMW 525iT E39?
P0404 stands for "EGR Control Circuit Range/Performance". The EGR valve is not responding as commanded by the PCM.
What are the symptoms of P0404 on a BMW 525iT E39?
Common symptoms of P0404 include: Check Engine Light, Rough idle, Stalling, Poor performance.
What causes P0404 on a 2001-2003 BMW 525iT E39?
Common causes of P0404 include: Carbon restricting EGR valve movement, Faulty position sensor in EGR, EGR valve mechanically stuck.