Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P1151 Description

Lack Of HO2S21 Switch – Sensor Indicates Lean is one of the definitions for the P1151; however your vehicle’s manufacturer may have a different definition for the P1151 code. Please check below for your specific make.

P1151 Information for specific makes

P1151 FORD
P1151 HYUNDAI