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2019 TOYOTA RAV4
2.5L I4 (A25A-FKS, Dynamic Force)•FWD•AUTOMATIC•gas•M20A-FKS
7 active safety recalls on this vehicle — view recalls
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Repairs396Labor479Torque363Fluid7DTC1640Battery1Maintenance0Recalls7
P0433moderate severityPowertrain

Heated Catalyst Temperature Below Threshold (Bank 2)

on 2019 Toyota RAV4 2.5L I4 (A25A-FKS, Dynamic Force) · FWD

What this code means

The heated catalyst on bank 2 is not reaching its expected operating temperature. This prevents the converter from properly reducing emissions during warm-up.

Symptoms

  • Check engine light on
  • Failed emissions test
  • Higher tailpipe emissions

Common causes

  • Faulty catalyst heater circuit
  • Damaged catalytic converter (bank 2)
  • Wiring or connector fault to heater
  • Blown heater fuse or relay

Diagnostic steps

  1. Check heater circuit fuse and relay
  2. Inspect wiring and connectors to heater
  3. Measure heater element resistance
  4. Replace heated catalyst if faulty
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