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P1131 on the 1997 Mazda B-Series

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.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name P1131
01002022002-09-28. Service bulletin. SUBJECT REGARDING THE ILLUMINATION OF THE MALFUNCTION INDICATOR LAMP WITH DIAGNOSTIC TROUBLE CODES P1151/P1131 (OXYGEN SENSOR LEAN - NOT SWITCHING) AND/OR P0171/P0174 (AIR FUEL MIXTURE ON LEAN SIDE) STORED IN CONTINOUS MEMORY. *SLC
009981999-03-11. Service bulletin. SUBJECT REGARDING MALFUNCTION INDICATOR LIGHT( MIL) WITH DTC P1151 / P1131 / P0171 / P0174 ROUGH IDLE AND / OR STALL. *YC

2 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.