Causes:
– Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
– 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)
Notes:
The code means that there is a problem with the heater element circuit of the heated oxygen sensor. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow, which is a very common problem for this type codes. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors.
HO2S Heater Control Circuit Low Bank 1 Sensor 2 is the generic definition for the P0037; however your vehicle’s manufacturer may have a different definition and information for the P0037 code.
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When is the code detected?
The P0037 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit
Symptoms:
– Engine Light ON (or Service Engine Soon Warning Light)
Description:
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 OBD-II Code for makes:
Acura P0037
Alfa Romeo P0037
Aston Martin P0037
Audi P0037
BMW P0037
Bentley P0037
Bugatti P0037
Cadillac P0037
Chevrolet P0037
Chrysler P0037
Citroen P0037
Dodge P0037
Ferrari P0037
Fiat P0037
Ford P0037
Honda P0037
Hummer P0037
Hyundai P0037
Infiniti P0037
Jaguar P0037
Jeep P0037
Lamborghini P0037
Lancia P0037
Land Rover P0037
Lexus P0037
Lincoln P0037
Maserati P0037
Maybach P0037
Mazda P0037
Mercedes P0037
Mitsubishi P0037
Nissan P0037
Opel P0037
Pagani P0037
Peugeot P0037
Pontiac P0037
Porsche P0037
Renault P0037
Rolls-Royce P0037
Saab P0037
Seat P0037
Skoda P0037
Subaru P0037
Suzuki P0037
Toyota P0037
Volkswagen P0037
Volvo P0037