P0174 on the 2001 Toyota Highlander
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| TMSNTC01016 | 2001-12-11. Service bulletin. SOME VEHICLES MAY ILLUMINATE THE CHECK ENGINE LIGHT AND SET DIAGNOSTIC TROUBLE CODES P1130, P1135, P1150, P1155, P1071 AND / OR P0174. *JB |
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| TE0014 | 2001-07-10. Service bulletin. SUBJECT REGARDING ELECTRONIC CONTROL UNIT (ECU) REPROGRAMMING SUPPORT. CERTAIN 2001 FOUR CYLINDER VEHICLES, IF DRIVEN AT TEMPERATURES BELOW 30 DEGREES F, MAY DISPLAY A MALFUNCTION INDICATOR LAMP (MIL) AND STORE ONE OR MORE OF THE FOLLOWING DIAGNOSTIC TROUBLE CODES: P0171, P0174, P1130, P1133, P1150, OR P1155. IF THESE CODES ARE SET, AIR / FUEL RATIO SENSORS, BANK ONE, SENSOR ONE AND BANK TWO, SENSOR ONE ARE LIKELY DAMAGED AND BOTH SENSORS WILL NEED TO BE REPLACED. TO AVOID DAMAGING THE REPLACEMENT AIR / FUEL RATIO SENSORS DURING COLD WEATHER DRIVING THESE VEHICLES WILL NEED THEIR ECU REPROGRAMMED. *TT |
| 100701 | 2001-07-10. Service bulletin. TDN MAIL MESSAGE REGARDING REPORTS THAT SOME 4-CYLINDER VEHICLES MAY ILLUMINATE THE CHECK ENGINE LIGHT AND SET DIAGNOSTIC TROUBLE CODES (DTC) P1130, P1135, P1150, P1155, P0171 AND / OR P0174 WHEN OPERATED BELOW 30 DEGREES F. *TT |
| TMSNTC01016 | 2001-03-07. Service bulletin. SOME 4-CYLINDER VEHICLES MAY ILLUMINATE THE CHECK ENGINE LIGHT AND SET DIAGNOSTIC TROUBLE CODES P1130, P1135, P1150, P1155, P0171 AND / OR P0174 WHEN OPERATED BELOW 30 DEGREES F. *TT |
4 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.