Nissan | P155b00 ~repack~

or interior electronics during heavy accessory usage. Potential Causes of P155B00

A: There is no single, widely published TSB for P155B00, as the causes can vary. However, Nissan does release Technical Service Bulletins for common issues related to the charging system and battery sensors. A qualified Nissan technician can check for any relevant TSBs for your specific vehicle model and year.

You will need a (e.g., Autel, Launch, or Nissan CONSULT). Generic OBD2 code readers won’t show internal resistance values.

Because this code specifically relates to electronic load sensing, the issue usually stems from the battery terminal assembly or the wiring harness leading to it. Common culprits include:

Diagnosing and fixing the P155B00 code is a systematic process. While some basic checks are straightforward, more complex issues may require professional expertise and specialized tools. A logical step-by-step approach can help identify the root cause and get your Nissan back on the road safely.

If the voltage is absent or out of specification, check the wiring between the sensor and the ECM/IPDM.

If the preliminary inspection doesn't reveal an obvious problem, it's time to test the electrical system's core components. A digital multimeter is essential for these tests.