Nissan P155b-00 Jun 2026

In other engine variants, this code points directly to the EGR temperature sensor circuit. The EGR system reroutes a portion of the engine's exhaust gases back into the intake manifold to lower combustion temperatures, which significantly reduces Nitrogen Oxide (NOx) emissions. The EGR temperature sensor monitors this process to ensure the gas flow is correct and effective. Common Symptoms of P155B-00

Inspect the wiring harness for corrosion or breaks, especially near the connectors. nissan p155b-00

Turn the key to ON and verify the presence of reference voltage feeding the sensor terminal. Step 4: Perform a Battery Management System (BMS) Reset In other engine variants, this code points directly

Potential slight fluctuations in engine RPM if the alternator load switches erratically. JustAnswer Common Causes Defective Sensor Common Symptoms of P155B-00 Inspect the wiring harness

The Glow Plug Control Module has failed or lost communication.

In many Nissan applications (especially hybrids like the Pathfinder Hybrid, Infiniti QX60 Hybrid, or some newer e-POWER models), this code points to an issue with the inside the IPM (Intelligent Power Module or inverter) .

If you recently had a dead battery or replaced it, use an OBD2 scanner to clear the code. Take the vehicle for a test drive to see if the fault returns.