Question about 1997 Honda Civic
I recently bought a 1997 Honda Civic LX, with a 1.6 liter 4 cylinder engine. The engine light was on so I had it analyzed and got a PO 135 code, i.e. oxygen sensor #1, heater circuit. I have changed both sensors out and have checked wiring and connections and still the light stays on and I continue to get the same code. The exhaust manifold has been repaired at some point by welding a bead in the middle right next to the #1 sensor. Could this be my problem???
Remove brackett from under intake manifold to block you will see a gray or green plug look real close and you will see a bare wire or a wire that has been pinched real bad this wire controls heater circuit for the o2 sensors also check fuse # 15.there is a tsb from honda on this problem
Posted on Mar 17, 2009
After replacing the Oxy-sensor the ECU has to be reset to clear the fault.
Posted on Mar 12, 2009
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