i replaced the o2 sensors and plugs an wires and the check engine light is still on it says 1/1 o2sensor high voltage to circuit what else could be wrong
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2003 Dodge Ram 1500 Question: running rough
Answer #1mastertech6371 May 08, 2010, 05:48Master
it depends. if it is a heater circuit, you may have replaced the correct sensor, there are 4 sensors, 2 upstream and 2 downstream, but the circuit is protected by a heater fuse which may have blown in the process.
ReplyHarpoon, December 01, 2010, 23:32Rookie
Where is the heater fuse and is it hard to change? What I mean is, is it in the fuse box in the engine or is it an inline fuse?
Replymastertech6371, December 02, 2010, 05:59Master
it is in the fuse box. if it was blown, more than one heater would not be working.