Malfunction Indicator Lamp Illumination Due To Oxygen Sensor This bulletin involves the installation of an Oxygen (O2) Sensor Overlay Harness for any Oxygen Sensor related DTC(s). The Overlay Harness will consist of twelve 18 AWG wires (six from each Oxygen Sensor) that run to a new Oxygen Sensor Module connector. Four wires will be removed from the original vehicle O2 Module connector and installed in the new overlay harness O2 Module connector.Do NOT replace any parts prior to performing this bulletin and the Verifications test below. If the vehicle has any of the following DTC?s for O2 Sensors, Stored, Pending or Active, perform the Repair Procedure. P013A O2 Sensor 1/2 Slow Response - Rich To Lean (Soot related code, see note). P013B O2 Sensor 1/2 Slow Response - Lean To Rich (Soot related code, see note). P014C O2 Sensor 1/1 Slow Response - Rich To Lean (Soot related code, see note)P014D O2 Sensor 1/1 Slow Response - Lean To Rich (Soot related code, see note) P0030 O2 Sensor 1/1 Heater Circuit P0031 O2 Sensor 1/1 Heater Circuit Low P0032 O2 Sensor 1/1 Heater Circuit High P0036 O2 Sensor 1/2 Heater Circuit Malfunction P0037 O2 Sensor Heater Circuit Low 1/2 P0038 O2 Sensor Heater Circuit High 1/2 P0053 O2 Sensor Heater 1/1 Resistance P0054 O2 Sensor Heater 1/2 Resistance P064D Internal Control Module 02 Sensors Processor Performance - Bank 1 P0131 1/1 02 Sensor Shorted To Ground P0132 1/1 02 Sensor Shorted To Voltage P0135 O2 Sensor 1/1 Heater Performance P0137 1/2 02 Sensor Shorted To Ground P0138 1/2 02 Sensor Shorted To Voltage P0141 O2 Sensor 1/2 Heater Performance P113C O2 Sensor Power Supply Circuit Performance P2195 O2 Sensor 1/1 Out Of Range High P2196 O2 Sensor 1/1 Out Of Range Low P22AB O2 Sensor Positive Current Control Circuit/Open - Bank 1 Sensor 2 P22AE O2 Sensor Reference Voltage Circuit/Open - Bank 1 Sensor 2 P22B2 O2 Sensor Negative Current Control Circuit/Open - Bank 1 P22B5 O2 Sensor 1/2 Pump Cel
