P1152 Isuzu 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 Isuzu 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.
Isuzu Vehicle:2013 Isuzu,2012 Isuzu,2011 Isuzu,2010 Isuzu,2009 Isuzu,2008 Isuzu,2007 Isuzu,2006 Isuzu,2005 Isuzu,2004 Isuzu,2003 Isuzu,2002 Isuzu,2001 Isuzu,2000 Isuzu,1999 Isuzu,1998 Isuzu,1997 Isuzu,1996 Isuzu,Isuzu Rodeo,Isuzu Trooper,Isuzu Ascender