DTC P0031, DTC P0032, DTC P0051 & DTC P0052: Notes
WARNING: This page is about a different car, the 2003 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
If ECM replacement is instructed in following testing, always ensure ECM harness connector 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 - LEXUS
article in GENERAL INFORMATION.
Code Definition
- DTC P0031: Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 1)
- DTC P0032: Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 1)
- DTC P0051: Oxygen Sensor Heater Control Circuit Low (Bank 2 Sensor 1)
- DTC P0052: Oxygen Sensor Heater Control Circuit High (Bank 2 Sensor 1)