DTC P1133 Or DTC P1153: Notes

Code Definition

DTC P1133: Air/Fuel Sensor Circuit Response Malfunction (Bank 1, Sensor 1)
DTC P1153: Air/Fuel Sensor Circuit Response Malfunction (Bank 2, Sensor 1)

CAUTION: If ECM replacement is instructed in following testing, always ensure ECM connectors and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction. If ECM is replaced, ECM must be programmed with proper ignition key code for engine immobilizer system. For programming procedures, see COMPUTER RELEARN PROCEDURES - IMPORT article in GENERAL INFORMATION, or appropriate ENGINE IMMOBILIZER SYSTEMS article in ACCESSORIES & EQUIPMENT.

NOTE: Bank 1 is also known as right bank (RH).

NOTE: For component location, see appropriate illustration in THEORY & OPERATION article.