DTC P1135 Or DTC P1155: Notes

Code Definition

DTC P1135: Air/Fuel Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
DTC P1155: Air/Fuel Sensor Heater Circuit 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.