GDI Fuel Rail Pressure Exceeded Maximum Limit
2006-2011 BMW 325i 3.0L I6 N52
Description
The fuel rail pressure has exceeded the maximum safe operating pressure. The pressure relief valve may have activated.
Symptoms
- Check Engine Light
- Fuel smell from engine
- Rough running
- Fuel injector damage risk
- Possible fuel leak at high pressure fittings
- Engine running rich
Common Causes
- Pressure relief valve failure
- Fuel pressure regulator stuck
- High-pressure pump stuck in max output
- Blocked fuel return line
- PCM commanding excessive pressure
Diagnostic Steps
- Read fuel rail pressure PID immediately
- Check if relief valve has opened
- Inspect high-pressure lines for leaks
- Test pressure regulator operation
- Review PCM fuel pressure command
Repair Notes
SAFETY ISSUE - high-pressure fuel leak risk. Replace pressure regulator or relief valve. Inspect all high-pressure fittings for damage or weeping.
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
P3652 on Other Vehicles
Common Questions
What does code P3652 mean on a 2006-2011 BMW 325i?
P3652 stands for "GDI Fuel Rail Pressure Exceeded Maximum Limit". The fuel rail pressure has exceeded the maximum safe operating pressure. The pressure relief valve may have activated.
What are the symptoms of P3652 on a BMW 325i?
Common symptoms of P3652 include: Check Engine Light, Fuel smell from engine, Rough running, Fuel injector damage risk, Possible fuel leak at high pressure fittings, Engine running rich.
What causes P3652 on a 2006-2011 BMW 325i?
Common causes of P3652 include: Pressure relief valve failure, Fuel pressure regulator stuck, High-pressure pump stuck in max output, Blocked fuel return line, PCM commanding excessive pressure.