P0196low severityPowertrain

Engine Oil Temperature Sensor Circuit

on 2021 Mazda Mazda3 2.0L I4 · FWD

What this code means

Malfunction in the engine oil temperature sensor circuit.

Symptoms

  • Check Engine Light
  • Incorrect oil temp reading

Common causes

  • Faulty oil temp sensor
  • Wiring issue
  • Connector corrosion

Diagnostic steps

  1. Test sensor resistance
  2. Inspect wiring
  3. Check connector

Repair notes

Replace oil temperature sensor.

Other Powertrain codes on this vehicle

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