2003 Dodge Ram 1500 Q&A

2003 Dodge Ram 1500 Question: running rough

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 -
Answer 1
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. Roy -
Comment 1
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? -
Comment 2
it is in the fuse box. if it was blown, more than one heater would not be working. Roy -
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