P0132 – O2 Sensor High Voltage (Bank 1 Sensor 1)

Description

The ECM detects a high voltage signal from the upstream O2 sensor on Bank 1.

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Symptoms

  • Poor fuel economy
  • Black smoke
  • Rough idle

Causes

  • Rich mixture
  • Faulty O2 sensor
  • Leaking injector

Diagnosis

  • Monitor O2 data
  • Inspect injectors
  • Check fuel trims

Repair

  • Replace O2 sensor
  • Repair injector

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