Diagnostic group

Oxygen Sensor & Heater Codes

Front and rear oxygen-sensor circuit, response, and heater faults that affect fuel control or catalyst monitoring.

P0130-P0167

How to Use This Group

Start by reading all stored and pending codes together. A companion lean, misfire, EVAP, or oxygen-sensor code can change which test should come first.

Codes in This Group

P0133 Bank 1 Sensor 1 Oxygen Sensor Slow Response The upstream oxygen sensor on bank 1 is switching more slowly than expected. P0135 Bank 1 Sensor 1 Oxygen Sensor Heater Circuit The upstream bank 1 oxygen-sensor heater circuit is not operating as expected. P0153 Bank 2 Sensor 1 Oxygen Sensor Slow Response The upstream oxygen sensor on bank 2 is switching more slowly than expected. P0155 Bank 2 Sensor 1 Oxygen Sensor Heater Circuit The upstream bank 2 oxygen-sensor heater circuit is not operating as expected.

Sources

  1. SAE J2012DA Digital Annex of Diagnostic Trouble Code Definitions