What could cause a constant electrical current in my exhaust system. When the key is turned, it becomes hot. No bare wires touching the exhaust.Already screwed up my rear 02 sensor. Need to find this, fast.
O2 sensors have a heater in them, so they have power. Any wiring harness that touches the exhaust manifold and rubs through could do that. Pull fuses one at a time to find which circuit is feeding it.
