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2016 FORD F-150
5.0L V8 Coyote•RWD•AUTOMATIC•gas
14 active safety recalls on this vehicle — view recalls
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Repairs420Labor1001Torque8720Fluid18DTC2290Battery2Maintenance0Recalls14
P0430high severityPowertrain

Catalyst System Efficiency Below Threshold Bank 2

on 2016 Ford F-150 5.0L V8 Coyote · RWD

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

  1. Compare upstream/downstream O2 waveforms Bank 2
  2. Check for exhaust leaks
  3. Test downstream O2 sensor Bank 2
  4. Check for misfire codes
  5. Inspect for oil consumption

Repair notes

Same approach as P0420 but for Bank 2. Replace catalyst if confirmed failed.

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