P0134

The P0134 code indicates a malfunction related to the oxygen sensor circuit for bank 1 in a Toyota RAV4, which typically means the engine control module (ECM) is not receiving a valid signal from the upstream oxygen sensor.

The P0134 code indicates a problem with the oxygen sensor circuit, specifically the O2 sensor located upstream (pre-catalytic converter) on a 2019-2024 Toyota RAV4 XA50. This code suggests that the sensor is not providing a reliable signal to the engine control module (ECM).

The P0134 code indicates that the Engine Control Module (ECM) has detected a problem with the bank 1 oxygen sensor circuit, specifically that the sensor is not producing the expected voltage signal. This issue is often seen in the Toyota RAV4 XA40 models from 2013 to 2018.