P0401 on the 2001 Ford Focus
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.
| 04111 | 2004-07-24. Service bulletin. STREAMLINED DIAGNOSTIC PROCEDURE FOR VEHICLES WITH MALFUNCTION INDICATOR LAMP (MIL) ON AND DIAGNOSTIC TROUBLE CODES (DTCS) P0401, P0402, P1400 OR P1401. ADDITIONAL SYMPTOMS MAY INCLUDE RUNS ROUGH, LACKS POWER, SURGE, POOR FUEL ECONOMY. *TT |
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| 03223 | 2004-06-16. Service bulletin. STREAMLINED DIAGNOSTIC PROCEDURE FOR VEHICLES WITH MALFUNCTION INDICATOR LAMP ON AND DIAGNOSTIC TROUBLE CODES (DTCS) P0401, P0402, P1400 OR P1401. ADDITIONAL SYMPTOMS MAY INCLUDE RUNS ROUGH, LACKS POWER, SURGE, POOR FUEL ECONOMY. *TT |
| 0322 | 2003-09-03. Service bulletin. STREAMLINED DIAGNOSTIC PROCEDURE FOR VEHICLES WITH MALFUNCTION INDICATOR LAMP (MIL) ON AND DIAGNOSTIC TROUBLE CODES (DTCS) P0401, P0402, P1400 OR P1401, OR RUNS ROUGH, LACKS POWER, SURGE, POOR FUEL ECONOMY, AND THE ABOVE LISTED DTCS WITHOUT MIL. *TT |
| 0361 | 2003-07-23. Service bulletin. MALFUNCTION INDICATOR LAMP ON WITH OR WITHOUT ROUGH RUNNING, LACK OF POWER, SURGE OR POOR FUEL ECONOMY WITH DIAGNOSTIC TROUBLE CODES P0401, P0402, P1400, P1401. *TT *JB |
| 0213 | 2002-11-04. Service bulletin. SOME 2001 VEHICLES EQUIPPED WITH A 2.0L SPI ENGINE MAY EXHIBIT A PULSING OR TICKING NOISE ORIGINATING FROM THE ENGINE COMPARTMENT AND / OR MAY HAVE A MALFUNCTION INDICATOR LAMP LIGHT ON WITH DIAGNOSTIC TROUBLE CODE P0401 OR P0402 CODE. *TT |
| 14977 | 2001-10-22. Service bulletin. SOME VEHICLES WITH A 2.0L ZETEC ENGINE MAY EXHIBIT A DIAGNOSTIC TROUBLE CODE P0401 OR OTHER DPFE RELATED DIAGNOSTIC TROUBLE CODES. *TT |
6 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.