P0431moderate severityPowertrain
Warm Up Catalyst Efficiency Below Threshold Bank 2
on 2017 Maserati Levante 3.0L V6 Twin Turbo · AWD
What this code means
Bank 2 warm-up catalyst efficiency is below threshold.
Symptoms
- Check Engine Light
- Failed emissions
Common causes
- Worn catalyst
- Rich running during warmup
- O2 sensor issue
Diagnostic steps
- Monitor catalyst
- Compare O2 signals
- Check exhaust
Repair notes
Replace warm-up catalyst if confirmed.
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P0001
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P0002
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P0003
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P0004
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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