If the wiring looks intact externally, use a digital multimeter to confirm electrical integrity:
The ignition switch is in the "ON" position, and the battery voltage measured by the ECM remains below or above the required threshold for more than 20 seconds. nissan p155b00
Moisture entering the plug at the sensor, which is located under the vehicle and exposed to the elements. If the wiring looks intact externally, use a
Located on the negative battery terminal, this sensor communicates the battery’s state of charge and temperature to the ECM. If the sensor fails or its connector corrodes, incorrect data is sent. If the sensor fails or its connector corrodes,
When this code is triggered, you may notice one or more of the following issues:
: In cold weather, the engine may take longer to reach operating temperature. No Drivability Issues
: This is usually the first sign, sometimes accompanied by a "Limp Mode" (reduced engine power) to protect the engine. Recommended Diagnostic Steps