P0135

The Toyota RAV4 Fourth Generation (2013-2018) is displaying a check engine light with diagnostic trouble code (DTC) P0135, indicating a problem with the oxygen sensor circuit.

The P0135 error code indicates a malfunction with the oxygen sensor heater circuit in a 2013-2018 Toyota RAV4, which can lead to improper fuel mixture adjustments and decreased engine performance.

The P0135 code indicates a malfunction in the heated oxygen sensor circuit for the upstream oxygen sensor in a Toyota RAV4 XA50 (2019-2024). This issue can lead to improper air-fuel mixture adjustments and increased emissions.

The Toyota RAV4 XA40 (2013-2018) is displaying a check engine light accompanied by a P0135 code, indicating a malfunction in the oxygen sensor circuit, specifically for the upstream oxygen sensor (O2 sensor).