Nissan P155b00 __hot__ Jun 2026

Remove the negative and positive battery terminals. Inspect closely for any green/white copper sulfate corrosion. Clean with a wire brush and baking soda solution.

Serves as a standard hex suffix indicating no further sub-type details are present, functioning as a general fault marker for the primary circuit. Common Symptoms of Nissan P155B00

If cleaning does not resolve the issue:

Ignoring P155B00 can damage the entire hybrid battery pack. The healthy modules will be forced to overcompensate for the weak one, leading to a cascading failure. Continued driving also risks overheating the battery, which could trigger a failure of the high-voltage safety contactors (requiring a full pack replacement). nissan p155b00

In some cases, the vehicle may enter "limp mode" to prevent further emissions damage. Primary Causes

To diagnose the P155B00 code, you'll need to use a code reader or scan tool to retrieve the code and any additional information. Here are some steps to follow:

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. Remove the negative and positive battery terminals

A: Mostly. It appears on the Note, Serena, X-Trail (T32 Hybrid), and Infiniti M35h / QX60 Hybrid. It rarely appears on the Leaf because the Leaf’s battery architecture is different (no internal resistance monitoring in the same way).

While no maintenance routine can guarantee a trouble code will never appear, the following habits can reduce the likelihood of encountering P155B00 in the future:

The code P155B00 triggers when the ECM notes that a specific oxygen sensor is tracking changes too slowly. It is failing to switch rapidly between "lean" and "rich" voltage signals. Because the computer cannot trust the sluggish data coming from the sensor, it forces the car to stay in an open-loop operating state, dropping fuel economy and illumination of the Malfunction Indicator Lamp (MIL). Common Symptoms of Nissan P155B00 Serves as a standard hex suffix indicating no

The most common fix is . Note that sensors are location-specific and cannot be swapped between the upstream and downstream positions. Genuine Nissan replacement sensors are highly recommended to ensure compatibility with the vehicle's ECU software.

A: Yes, absolutely. The ground cable from the negative battery terminal to the chassis is a critical pathway for the return of electrical current to the battery. A corroded, loose, or broken ground cable will add significant resistance to the circuit, causing a voltage drop that can easily trigger the P155B00 code.