P0055

2017-10-10

Description:

  • The fault code P0055 indicates that there is a problem with the heating circuit of the oxygen sensor located in bank 1, sensor 3. This can cause the engine to run poorly, decrease fuel efficiency, and negatively impact emissions.

Possible Symptoms:

  • Illuminated check engine light

  • Engine running poorly or roughly

  • Decreased fuel efficiency

  • Increased emissions

Possible Causes:

  • A damaged or failed oxygen sensor

  • A corroded or damaged oxygen sensor wiring harness

  • A bad oxygen sensor relay or fuse

  • A problem with the engine control module (ECM)

Related Parts:

  • Heated Oxygen Sensor: This is one of the parts that fails very commonly. It measures the amount of oxygen to ensure proper combustion. Problems in the Oxygen Sensor lead to poor fuel economy

Possible Solutions:

  • Replace the faulty oxygen sensor

  • Repair any damaged wiring or connections

  • Replace the oxygen sensor relay or fuse if necessary

  • Replace the engine control module (ECM) if the problem persists

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