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How to Fix the DTC P0038 2007 Nissan Pathfinder?
Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0038 2007 Nissan Pathfinder code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
When is the Code Detected?
The P0038 is set when the ECM detects an excessively high voltage through the heated oxygen sensor heater circuit
What are Code Possible Symptoms?
Engine Light ON (or Service Engine Soon Warning Light)
Code P0038 2007 Nissan Pathfinder 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.
P0038 2007 Nissan Pathfinder Code - HO2S12 Heater Control Circuit High
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