Engine Controls - MIL ON/O2 Sensor DTC's Set
ENGINEEG015-03
October 28, 2003
Title
M.I.L. "ON" DTC P0031, P0051, P2238 OR P2241
Models
'03 Camry (V6)
Introduction
Under certain driving conditions, some 2003 model year Camry vehicles with V6 engines may exhibit a M.I.L. ON" with at least one of the following DTCs as a result of an Air Fuel (A/F) Sensor manufacturing issue.
^ P0031 (Oxygen Sensor Heater Control Circuit Low [Bank 1, Sensor 1])
^ P0051 (Oxygen Sensor Heater Control Circuit Low [Bank 2, Sensor 1])
^ P2238 (Oxygen Sensor Pumping Current Circuit Low (for A/F Sensor) [Bank 1, Sensor 1])
^ P2241 (Oxygen Sensor Pumping Current Circuit Low (for A/F Sensor) [Bank 2, Sensor 1])
Replacement of the affected Air Fuel Sensor will correct this condition.
Applicable Vehicles
^ 2003 model year Camry vehicles equipped with V6 engines produced BEFORE the Production Change Effective VINs shown below.
Production Change Information
Parts Information
Warranty Information
Applicable Warranty*:
This repair is covered under the Toyota Comprehensive Warranty. This warranty is in effect for 36 months or 36,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Repair Procedure
P0031 or P0051
1. Refer to the Technical Information System (TIS), 2003 Camry Repair Manual, Diagnostics, SFI System (1MZ-FE) P0031, P0032, P0051, P0052.
2. If there is an open circuit or excessive resistance in the A/F Sensor heater, and DTC P0031 or P0051 is stored, replace the A/F sensor.
3. Only replace the A/F Sensor indicated by the M.I.L. ON" DTC(s).
P2238 or P2241
1. Refer to the Technical Information System (TIS), 2003 Camry Repair Manual, Diagnostics, SFI System (1MZ-FE) P2237, P2238, P2239, P2240, P2241, P2242.
2. If there is an open circuit in the A/F Sensor heater and DTC P2238 or P2241 is stored, replace the A/F sensor.
3. Only replace the A/F Sensor indicated by the M.I.L. ON" DTC(s).