When diagnosing a vehicle, a code such as the Nissan Code P0037 can be a source of confusion and frustration. The code is a trouble code that is defined as the Heated Oxygen Sensor 2 Heater Control Circuit Low, which includes Hybrid Models. This trouble code can be the result of a variety of issues, such as a faulty harness or connectors, a shorted or open circuit, or a faulty Heated Oxygen Sensor 2 Heater. The current amperage in the Heated Oxygen Sensor 2 Heater Circuit is out of the normal range, sending an excessively low voltage signal to the ECM. To diagnose the issue, it is important to understand the various causes and solutions associated with this trouble code.
Causes and Solutions for Nissan Code P0037
| Causes | Solutions |
|---|---|
| Faulty Harness or Connectors | Repair or replace the harness or connectors |
| Open or Short Circuit | Check the circuit for breaks or shorts and repair these |
| Faulty Heated Oxygen Sensor 2 Heater | Replace the Heated Oxygen Sensor 2 Heater |
| High-Voltage Battery System | Turn the ignition switch off and remove the service plug from the pocket in the trunk |
Faulty Harness or Connectors
A faulty harness or connectors can be a cause of Nissan Code P0037. The faulty harness or connectors can cause the current amperage in the Heated Oxygen Sensor 2 Heater Circuit to be out of the normal range, sending an excessively low voltage signal to the ECM. To diagnose this issue, the mechanic must inspect the harness and connectors for any damage or corrosion and repair or replace them as needed.
Open or Short Circuit
An open or short circuit in the Heated Oxygen Sensor 2 Heater Circuit can also be a cause of Nissan Code P0037. The mechanic must inspect the circuit for any breaks or shorts and repair these as needed.
Faulty Heated Oxygen Sensor 2 Heater
Another potential cause for Nissan Code P0037 is a faulty Heated Oxygen Sensor 2 Heater. If the Heated Oxygen Sensor 2 Heater is faulty, it must be replaced.
High-Voltage Battery System
In some cases, the high-voltage battery system may be the cause of Nissan Code P0037. To diagnose this issue, the mechanic must turn the ignition switch off and remove the service plug from the pocket in the trunk.
Conclusion
The Nissan Code P0037 is a trouble code that is defined as the Heated Oxygen Sensor 2 Heater Control Circuit Low. The code can be the result of a variety of issues, such as faulty harness or connectors, an open or short circuit, a faulty Heated Oxygen Sensor 2 Heater, or a high-voltage battery system. To diagnose the issue, it is important to understand the causes and the solutions associated with Nissan Code P0037.
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