P1335high severityPowertrain
Crankshaft Position Sensor IFI Malfunction
on 2002 Mercedes-Benz SL 3.0L I6 · RWD
What this code means
The ECU detected an Instantaneous Firing Indication (IFI) malfunction from the crankshaft position sensor. The sensor is not providing reliable crankshaft angle data needed for precise fuel injection and ignition timing.
Symptoms
- Check Engine Light
- Engine may not start
- Intermittent stalling
- Rough running
- Misfires under load
Common causes
- Faulty crankshaft position sensor
- Damaged reluctor wheel
- Sensor wiring damage
- Electromagnetic interference
- Incorrect sensor type installed
Diagnostic steps
- Test CKP sensor signal pattern
- Inspect reluctor wheel for missing or damaged teeth
- Check sensor wiring for damage or interference
- Test sensor supply voltage
- Verify correct part number
Repair notes
Replace the crankshaft position sensor and inspect the reluctor wheel.
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