Ford P1131 OBD-II Trouble Code Definition:
P1131 Lack Of HO2S Switch – Sensor Indicates Lean
P1131 Ford OBD-II Trouble CodeDescription:
Lack Of HO2S Switch – Sensor Indicates Lean is one of the definitions for the P1131; however your vehicle’s manufacturer may have a different definition for the P1131 code. Please check below for your specific make.
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