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2016 LINCOLN MKX
3.7L V6•AWD•AUTOMATIC•gas
7 active safety recalls on this vehicle — view recalls
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Repairs0Labor983Torque9632Fluid16DTC1914Battery2Maintenance0Recalls7
P0136moderate severityPowertrain

O2 Sensor Circuit Bank 1 Sensor 2

on 2016 Lincoln MKX 3.7L V6 · AWD

What this code means

General malfunction in the downstream O2 sensor circuit for Bank 1.

Symptoms

  • Check Engine Light
  • Failed emissions test
  • Reduced catalyst monitoring

Common causes

  • Faulty downstream O2 sensor
  • Wiring damage
  • Exhaust leak after catalyst

Diagnostic steps

  1. Test O2 sensor voltage
  2. Inspect wiring
  3. Check for exhaust leaks after cat

Repair notes

Replace downstream O2 sensor.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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