P3045critical severityPowertrain
DCT Hydraulic Pump Pressure Low
on 2012 BMW 320i 2.0L I4 Turbo N20 · RWD
What this code means
The DCT hydraulic pump is not generating sufficient pressure for clutch actuation and gear selection.
Symptoms
- Check Engine Light
- Slow gear changes
- Clutch slip during shifts
- No drive in any gear
- Transmission warning light
- Creep function loss in stop-and-go
Common causes
- Worn hydraulic pump
- Low hydraulic fluid level
- Internal seal leak
- Pressure accumulator failure
- Clogged hydraulic filter
Diagnostic steps
- Check hydraulic fluid level
- Read system pressure PID
- Test pump motor operation
- Inspect accumulator charge pressure
- Check for external fluid leaks
Repair notes
Replace hydraulic pump or repair internal leaks. Replace accumulator if pressure does not hold.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1