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Home/DTC Codes/Mazda/CX-3/2016-2021 2.0L I4/P0141
P0141

O2 Sensor Heater Circuit Bank 1 Sensor 2

2016-2021 Mazda CX-3 2.0L I4

Low SeverityPowertrainGeneric (SAE)

Description

Malfunction in the downstream O2 sensor heater circuit for Bank 1.

Symptoms

  • Check Engine Light
  • Failed emissions

Common Causes

  • Faulty sensor heater
  • Blown fuse
  • Wiring damage

Diagnostic Steps

  1. Check fuse
  2. Test heater resistance
  3. Inspect wiring

Repair Notes

Replace O2 sensor or repair wiring.

Related Codes

P0036HO2S Heater Control Circuit Bank 1 Sensor 2P0136O2 Sensor Circuit Bank 1 Sensor 2P0140O2 Sensor Circuit No Activity Bank 1 Sensor 2

Other Powertrain Codes

P0141 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 P0141 mean on a 2016-2021 Mazda CX-3?

P0141 stands for "O2 Sensor Heater Circuit Bank 1 Sensor 2". Malfunction in the downstream O2 sensor heater circuit for Bank 1.

What are the symptoms of P0141 on a Mazda CX-3?

Common symptoms of P0141 include: Check Engine Light, Failed emissions.

What causes P0141 on a 2016-2021 Mazda CX-3?

Common causes of P0141 include: Faulty sensor heater, Blown fuse, Wiring damage.

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