Possible causes – Faulty Oxygen Sensor– Fuel pressure high or low– MAF sensor dirty/defective– Vacuum leak on engine– Leaking fuel injector or fuel pressure regulator– Faulty Powertrain Control Module Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
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
HYUNDAI Technical Service Bulletins for P1151 code 2001 HYUNDAI SANTA FE VEHICLE SPEED CONTROL:ACCELERATOR PEDAL 2001 HYUNDAI XG300 VEHICLE SPEED CONTROL:ACCELERATOR PEDAL 2001 HYUNDAI XG350 VEHICLE SPEED CONTROL:ACCELERATOR PEDAL 2002 HYUNDAI SANTA FE VEHICLE SPEED CONTROL:ACCELERATOR PEDAL 2002 HYUNDAI XG300