P0403
EGR Control Circuit
1997-2000 BMW 528i E39 2.8L I6 🇦🇺
Moderate SeverityPowertrain
Description
Malfunction in the EGR valve control circuit (electrical EGR valves).
Symptoms
- Check Engine Light
- EGR not functioning
- Increased emissions
Common Causes
- Faulty EGR valve
- Wiring damage
- PCM driver failure
- Corroded connector
Diagnostic Steps
- Test EGR valve solenoid resistance
- Check wiring
- Command EGR with scan tool
- Test PCM output
Repair Notes
Replace EGR valve or repair wiring.
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
P0403 on Other Vehicles
Common Questions
What does code P0403 mean on a 1997-2000 BMW 528i E39?
P0403 stands for "EGR Control Circuit". Malfunction in the EGR valve control circuit (electrical EGR valves).
What are the symptoms of P0403 on a BMW 528i E39?
Common symptoms of P0403 include: Check Engine Light, EGR not functioning, Increased emissions.
What causes P0403 on a 1997-2000 BMW 528i E39?
Common causes of P0403 include: Faulty EGR valve, Wiring damage, PCM driver failure, Corroded connector.