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Home/DTC Codes/Mitsubishi/Eclipse/2007-2007 2.4L I4/P0038
P0038

HO2S Heater Control Circuit High Bank 1 Sensor 2

2007-2007 Mitsubishi Eclipse 2.4L I4

Low SeverityPowertrainGeneric (SAE)

The 2007 Mitsubishi Eclipse is equipped with a 2.4L inline-4 engine. Below you'll find detailed p0038 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.

Description

The voltage in the Bank 1 Sensor 2 O2 heater circuit is higher than expected.

Symptoms

  • Check Engine Light
  • Possible overheating

Common Causes

  • Short to power
  • Faulty sensor
  • Relay issue

Diagnostic Steps

  1. Test heater voltage
  2. Check for shorts to power
  3. Test resistance

Repair Notes

Repair short or replace sensor.

Related Codes

P0036HO2S Heater Control Circuit Bank 1 Sensor 2P0037HO2S Heater Control Circuit Low Bank 1 Sensor 2

Other Powertrain Codes

P0038 on Other Vehicles

Mitsubishi 3000GT

1996-1996 3.0L V6 Twin Turbo

Mitsubishi 3000GT

1997-1997 3.0L V6 Twin Turbo

Mitsubishi 3000GT

1998-1998 3.0L V6 Twin Turbo

Mitsubishi 3000GT

1999-1999 3.0L V6 Twin Turbo

Mitsubishi Colt JP

2002-2002 1.3L I4 4A90

Mitsubishi Colt JP

2002-2002 1.5L I4 4A91

Mitsubishi Colt JP

2003-2003 1.3L I4 4A90

Mitsubishi Colt JP

2003-2003 1.5L I4 4A91

Common Questions

What does code P0038 mean on a 2007-2007 Mitsubishi Eclipse?

P0038 stands for "HO2S Heater Control Circuit High Bank 1 Sensor 2". The voltage in the Bank 1 Sensor 2 O2 heater circuit is higher than expected.

What are the symptoms of P0038 on a Mitsubishi Eclipse?

Common symptoms of P0038 include: Check Engine Light, Possible overheating.

What causes P0038 on a 2007-2007 Mitsubishi Eclipse?

Common causes of P0038 include: Short to power, Faulty sensor, Relay issue.

Last updated: March 2026

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