TOYOTA
Reported code forms P0133
ENGINE CONTROL MODULE (ECM) LOGIC HAS BEEN REVISED TO PREVENT UNNECESSARY M.I.L "ON" CONDITIONS AT HIGH ALTITUDES WITH DIAGNOSTIC TROUBLE CODES (DTC) PO130 AND P0133, ON VEHICLES OPERATING AT HIGH ALTITUDES. *YC
HomeP0133 · Manufacturer communications
P0133 · Manufacturer communications
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.