The first step is to use an OBD-II scanner to read the code. Many auto parts stores offer free scanning services. You can also purchase a scanner or use a mobile app that connects to a Bluetooth or Wi-Fi OBD-II adapter.
Disclaimer: Working on hybrid batteries involves high voltage (up to 400V DC). Always follow manufacturer safety procedures. If you are not trained, take your vehicle to a certified hybrid repair specialist. nissan p155b00
Inspect the electrical connector at the shutter motor for signs of water entry or broken wires [2]. The first step is to use an OBD-II scanner to read the code
If you are diagnosing this code, here is the hierarchy of probable causes, ranked from most likely to least likely: Inspect the electrical connector at the shutter motor
Use an OBD-II scanner to monitor NOx ppm (parts per million) values while driving. An implausible or "stuck" value (e.g., 6000 ppm) indicates a dead sensor.