P1152 Hyundai Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2
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
– 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)
P1152 Hyundai Description
A Heated Exhaust Gas Oxygen (HEGO) Sensor indicating lean at the end of a test is trying to correct for an over-rich condition. Test fails when fuel control system no longer detects switching for calibrated amount of time.
Hyundai Vehicle:Hyundai Sonata,Hyundai Elantra,Hyundai Tucson,Hyundai Veloster,Hyundai Accent,Hyundai Getz,Hyundai Genesis,Hyundai Veracruz