03 Silverado P0161
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Joined: Aug 2015
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03 Silverado P0161
I have a 2003 Silverado 5.3L 4WD . 180000 miles
My "check engine" light came on recently with a P0161 code. Since it has a lot of miles I replaced both downstream O2 sensors and cleared the code but it came back within 50 miles. I'm getting 12VDC and ground to the sensors and the heater reads 3.2 Ohms cold. Any ideas?
My "check engine" light came on recently with a P0161 code. Since it has a lot of miles I replaced both downstream O2 sensors and cleared the code but it came back within 50 miles. I'm getting 12VDC and ground to the sensors and the heater reads 3.2 Ohms cold. Any ideas?
