P155b-00 [work] | Nissan

: This system monitors the battery's state of charge, voltage, and current. The Engine Control Module (ECM) triggers this code when the measured battery voltage or the charging system's output goes above or falls below the specific expected thresholds for a set period (usually around 20 seconds or more). Mitsubishi Tech Info ⚠️ Common Causes Failing or Discharged Battery

Several underlying issues can trigger this DTC. In our experience repairing Nissans, here are the most common culprits: nissan p155b-00

She disconnected the twelve-volt battery first—safety. Then she unbolted the orange high-voltage service plug and waited the agonizing ten minutes for the capacitors to discharge. The sensor sat near the rear of the battery case, a black plastic ring with three tiny wires: ground, five-volt reference, and signal. : This system monitors the battery's state of

A: No. The code specifically targets the bypass valve, not the main thermostat. However, replacing both components together is often good preventative maintenance. In our experience repairing Nissans, here are the

| Service | Estimated Cost (USD) | |---------|----------------------| | Diagnostic fee | $100 – $150 | | Coolant bypass valve (OEM) | $120 – $250 | | Coolant & supplies | $30 – $60 | | Labor (1.5 – 2.5 hours) | $150 – $300 | | | $350 – $650 | | Total at independent shop | $250 – $450 | | DIY cost | $150 – $300 |