P0430high severityPowertrain
Catalyst System Efficiency Below Threshold Bank 2
on 2017 Maserati Levante 3.0L V6 Twin Turbo · AWD
What this code means
The Bank 2 catalytic converter is not performing efficiently. Same as P0420 but for Bank 2.
Symptoms
- Check Engine Light
- Failed emissions test
- Possible sulfur smell
Common causes
- Worn catalytic converter
- Exhaust leak near downstream O2
- Faulty O2 sensor Bank 2
- Misfire damage to catalyst
- Oil contamination
Diagnostic steps
- Compare upstream/downstream O2 waveforms Bank 2
- Check for exhaust leaks
- Test downstream O2 sensor Bank 2
- Check for misfire codes
- Inspect for oil consumption
Repair notes
Same approach as P0420 but for Bank 2. Replace catalyst if confirmed failed.
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Other Powertrain codes on this vehicle
P0001
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P0002
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P0003
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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