Question

On my Lexus, what is the meaning of the engine code P1155?

Answer 1

Hi there,

This code means there is a lean condition on sensor 1 bank 2 O2 sensor. This is typically the result of an intake manifold leak or the sensor itself. The code means the sensor is seeing a lean condition on that bank of the engine.

Answer 2

P1155 LEXUS - Air/Fuel Ratio Sensor Heater Circuit Malfunction Bank 2 Sensor 1

Read more: https://www.autocodes.com/p1155_lexus.html