P0037 Nissan - HO2S12 Heater Control Circuit Low
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
P0037 2003 NISSAN ALTIMA SEDAN
P0037 2004 NISSAN ALTIMA SEDAN
P0037 2005 NISSAN ALTIMA SEDAN
P0037 2006 NISSAN ALTIMA SEDAN
P0037 2004 NISSAN MAXIMA
P0037 2005 NISSAN MAXIMA
P0037 2006 NISSAN MAXIMA
P0037 2007 NISSAN MAXIMA
P0037 2008 NISSAN MAXIMA
P0037 2002 NISSAN SENTRA
P0037 2003 NISSAN SENTRA
P0037 2004 NISSAN SENTRA
P0037 2005 NISSAN SENTRA
P0037 2006 NISSAN SENTRA
Any information is appreciated. Thanks