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Home/DTC Codes/Mazda/CX-3/2016-2021 2.0L I4/P0158
P0158

O2 Sensor Circuit High Voltage Bank 2 Sensor 2

2016-2021 Mazda CX-3 2.0L I4

Moderate SeverityPowertrainGeneric (SAE)

Description

High voltage from the downstream O2 sensor on Bank 2.

Symptoms

  • Check Engine Light
  • May indicate catalyst failure

Common Causes

  • Faulty sensor
  • Catalyst failure
  • Rich condition

Diagnostic Steps

  1. Test voltage
  2. Check catalyst

Repair Notes

Replace sensor or catalyst.

Related Codes

P0156O2 Sensor Circuit Bank 2 Sensor 2P0157O2 Sensor Circuit Low Voltage Bank 2 Sensor 2P0430Catalyst System Efficiency Below Threshold Bank 2

Other Powertrain Codes

P0158 on Other Vehicles

Mazda 626

1993-1997 2.0L I4

Mazda 626

1993-1997 2.5L V6

Mazda 626

1998-2002 2.0L I4

Mazda 626

1998-2002 2.5L V6

Mazda Axela

2013-2019 1.5L I4 P5-VPS

Mazda B2300

1994-1997 2.3L I4

Mazda B2300

2002-2009 2.3L I4

Mazda B2500

1998-2001 2.5L I4

Common Questions

What does code P0158 mean on a 2016-2021 Mazda CX-3?

P0158 stands for "O2 Sensor Circuit High Voltage Bank 2 Sensor 2". High voltage from the downstream O2 sensor on Bank 2.

What are the symptoms of P0158 on a Mazda CX-3?

Common symptoms of P0158 include: Check Engine Light, May indicate catalyst failure.

What causes P0158 on a 2016-2021 Mazda CX-3?

Common causes of P0158 include: Faulty sensor, Catalyst failure, Rich condition.

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