P1315high severityPowertrain
Igniter Circuit Malfunction No. 4
on 2008 Lexus IS 250 2.5L V6 · RWD
What this code means
The ECM is not receiving the IGF signal from ignition coil No. 4.
Symptoms
- CEL
- Misfire cylinder 4
- Rough idle
- Reduced power
- Vibration
Common causes
- Faulty ignition coil
- Damaged wiring
- Worn spark plug
- Moisture in coil well
Diagnostic steps
- Test coil resistance
- Swap coils
- Inspect for moisture
- Check spark plug
Repair notes
Replace ignition coil No. 4.
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