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Home/DTC Codes/Mitsubishi/Eclipse/2006-2012 2.4L I4/P0155
P0155

O2 Sensor Heater Circuit Bank 2 Sensor 1

2006-2012 Mitsubishi Eclipse 2.4L I4

Low SeverityPowertrainGeneric (SAE)

Description

Malfunction in the upstream O2 sensor heater on Bank 2.

Symptoms

  • Check Engine Light
  • Extended warmup emissions

Common Causes

  • Faulty heater
  • Blown fuse
  • Wiring issue

Diagnostic Steps

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

Repair Notes

Replace O2 sensor.

Related Codes

P0050HO2S Heater Control Circuit Bank 2 Sensor 1P0150O2 Sensor Circuit Bank 2 Sensor 1P0154O2 Sensor Circuit No Activity Bank 2 Sensor 1

Other Powertrain Codes

P0155 on Other Vehicles

Mitsubishi 3000GT

1991-1999 3.0L V6

Mitsubishi 3000GT VR-4

1991-1999 3.0L Twin Turbo V6

Mitsubishi 3000GT VR-4

1991-1999 3.0L V6 Twin Turbo

Mitsubishi Colt JP

2002-2012 1.3L I4 4A90

Mitsubishi Colt JP

2002-2012 1.5L I4 4A91

Mitsubishi Diamante

1992-1996 3.0L V6

Mitsubishi Diamante

1997-2004 3.5L V6

Mitsubishi Eclipse

1990-1999 2.0L I4

Common Questions

What does code P0155 mean on a 2006-2012 Mitsubishi Eclipse?

P0155 stands for "O2 Sensor Heater Circuit Bank 2 Sensor 1". Malfunction in the upstream O2 sensor heater on Bank 2.

What are the symptoms of P0155 on a Mitsubishi Eclipse?

Common symptoms of P0155 include: Check Engine Light, Extended warmup emissions.

What causes P0155 on a 2006-2012 Mitsubishi Eclipse?

Common causes of P0155 include: Faulty heater, Blown fuse, Wiring issue.

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