NISSAN DTC P0037, P0038 HO2S2 HEATER

DTC P0037-Heated oxygen sensor 2 heater control circuit low

DTC P0038-Heated oxygen sensor 2 heater control circuit high

The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed, amount of intake air and engine coolant temperature.

The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range. (An excessively low voltage signal is sent to ECM through the heated oxygen sensor 2 heater.)

This Tutorial is applicable to the following Nissan Cars

#2005–present Nissan Serena
#2005–present Renault Samsung SM5
#2005–2012 Nissan Bluebird Sylphy
#2006–present Renault Clio
#2007–present Nissan X-Trail
#2007–present Nissan Qashqai
#2007–2012 Nissan Sentra
#2007–present Renault Laguna
#2008–2014 Nissan Teana(J32)
#2008–present Renault Safrane
#2008–2016 Renault Mégane(III)
#2009–present Renault Scénic
#2009–present Renault Fluence
#2009–present Renault Samsung SM3
#2009–present Renault Latitude
#2013–present Nissan NV200
#2013–present Nissan Sentra