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Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
I've got a 2003 v8 4.6l limited that started throwing p0135 and p0155 codes heater circuit malfunction bank 1/2 sensor 1/2. I replaced the sensors and still had the codes after clearing them. I took it into a shop to run some tests and they say the sensors are running fine, grounds are good...