P0424moderate severityPowertrain
Heated Catalyst Temperature Below Threshold (Bank 1)
on 2019 Toyota RAV4 2.5L I4 (A25A-FKS, Dynamic Force) · FWD
What this code means
The PCM detected that the heated catalyst on bank 1 is not reaching its required operating temperature. Low temperature prevents proper emissions conversion.
Symptoms
- Check engine light on
- Failed emissions test
- Longer emissions warm-up
Common causes
- Faulty catalyst heater
- Failed catalyst temperature sensor
- Wiring fault
- Failed catalytic converter
Diagnostic steps
- Scan and confirm P0424
- Check catalyst temperature sensor
- Test heater circuit
- Inspect wiring and connectors
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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