P0230high severityPowertrain
Fuel Pump Primary Circuit Malfunction
on 2002 Mercedes-Benz SL 3.0L I6 · RWD
What this code means
Malfunction in the fuel pump primary (relay/power supply) circuit.
Symptoms
- Check Engine Light
- No start condition
- Engine stalling
- Intermittent power loss
Common causes
- Faulty fuel pump relay
- Wiring damage
- Fuel pump failure
- Blown fuse
- Inertia switch tripped
Diagnostic steps
- Check fuel pump fuse
- Test fuel pump relay
- Listen for fuel pump prime
- Test voltage at fuel pump connector
- Check inertia switch (Ford)
Repair notes
Check fuse and relay first. Replace fuel pump if no voltage issue found.
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