DTC P0135: O2 Sensor 1/1 Heater Failure, DTC P0141: O2 Sensor 1/2 Heater Failure, DTC P0155: O2 Sensor 2/1 Heater Failure Or DTC P0161: O2 Sensor 2/2: Heater Failure: Notes

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: All Oxygen (O2) sensor DTCs listed are diagnosed using the same test. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures, Alpha/Numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform POWERTRAIN VERIFICATION TEST VER-5 under VERIFICATION TESTS to ensure system is functioning properly.