DTC P2237, DTC P2238, DTC P2239, DTC P2240, DTC P2241, DTC P2242 & DTC P2251, DTC P2252, DTC P2253, DTC P2254, DTC P2255 & DTC P2256: 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 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 - LEXUS
article in GENERAL INFORMATION.
NOTE:
Bank No. 1 is also know as right bank (RH).
NOTE:
For component location, see appropriate illustration in THEORY & OPERATION
article.
Code Definition
- DTC P2237: Oxygen Sensor Pumping Current Circuit/Open (For A/F Sensor - Bank 1 Sensor 1)
- DTC P2238: Oxygen Sensor Pumping Current Circuit Low (For A/F Sensor - Bank 1 Sensor 1)
- DTC P2239: Oxygen Sensor Pumping Current Circuit High (For A/F Sensor - Bank 1 Sensor 1)
- DTC P2240: Oxygen Sensor Pumping Current Circuit/Open (For A/F Sensor - Bank 2 Sensor 1)
- DTC P2241: Oxygen Sensor Pumping Current Circuit Low (For A/F Sensor - Bank 2 Sensor 1)
- DTC P2242: Oxygen Sensor Pumping Current Circuit High (For A/F Sensor - Bank 2 Sensor 1)
- DTC P2251: Oxygen Sensor Reference Ground Circuit/Open (For A/F Sensor - Bank 1 Sensor 1)
- DTC P2252: Oxygen Sensor Reference Ground Circuit Low (For A/F Sensor - Bank 1 Sensor 1)
- DTC P2253: Oxygen Sensor Reference Ground Circuit High (For A/F Sensor - Bank 1 Sensor 1)
- DTC P2254: Oxygen Sensor Reference Ground Circuit/Open (For A/F Sensor - Bank 2 Sensor 1)
- DTC P2255: Oxygen Sensor Reference Ground Circuit Low (For A/F Sensor - Bank 2 Sensor 1)
- DTC P2256: Oxygen Sensor Reference Ground Circuit High (For A/F Sensor - Bank 2 Sensor 1)