Googling the code, I've come to realize that the code is specifically for "Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)". This vehicle only has two O2 sensors and I verified that I had in fact replaced the one before the Cat.
This leads me to believe that the problem is in the circuit away from the O2 sensor. I know that there is a relay that provides power to the O2 sensor but it also provides power to the other O2 sensor and a couple of other sensors.
I might check for voltage in the wires tomorrow, but I'm pretty sure I know what I'll get. (I'll have to clamp the wires while a friend turns the key to on.)
Ideas on which relay to check? Which one is it?
Any other ideas?
have the same problem?
Monday, July 14th, 2008 AT 11:13 PM