Engine-Codes
 
OBDII Code List
 
P0037 2007 TOYOTA PRIUS

P0037 2007 TOYOTA PRIUS - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3  What does this mean?

P0037 2007 Toyota Prius Possible Causes

  • Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
  • EFI relay (integration relay)
  • 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)

P0037 2007 Toyota Prius Tech Notes

Check EFI relay (integration relay) before checking or replacing the oxygen sensor

Cost of diagnosing the P0037 2007 Toyota Prius code

    Labor: 1.0

    The cost of diagnosing the P0037 2007 Toyota Prius code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

The P0037 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit

P0037 2007 Toyota Prius Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0037 2007 Toyota Prius Meaning

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.

OBDII Code P0037 2007 Toyota Prius - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2 - Engine-Codes.com

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