P0434moderate severityPowertrain
Heated Catalyst Temperature Below Threshold (Bank 2)
on 2017 Maserati Levante 3.0L V6 Twin Turbo · AWD
What this code means
The bank 2 heated catalyst is running cooler than required for proper emissions control. The system detects the catalyst is not heating up as commanded.
Symptoms
- Check engine light on
- Failed emissions test
- Increased emissions on startup
Common causes
- Faulty catalyst heater element
- Wiring fault in heater circuit
- Failed heater relay or fuse
- Degraded catalytic converter
Diagnostic steps
- Verify heater power and ground
- Inspect heater circuit wiring
- Test heater element resistance
- Replace heated catalyst or repair circuit
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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
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1