Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello, and welcome to JA!!!! the code PO141 indicates a problem with the heater circuit of the 02 sensor behind the converter!!!!! the o2 sensor itself may be at fault, but you will need to make some checks first!!!! pretty simple checks!!! first off make sure the fuse is ok for the 02 sensor!!!!!! it is fuse 02 htr fuse it is a 10 amp red fuse. if it is ok, then take a look at some of the things i have included.
An intermittent could be the result of the following conditions:
Check for a poor electrical connection or a damaged harness. Inspect the harness electrical connectors for the following conditions:
Replace the entire HO2S 2 assembly. Do not attempt to repair the HO2S 2 if the following conditions exist:
Obstruction of the air reference and degraded HO2S 2 performance could result from any attempt to repair the above conditions.
The HO2S 2 must have a clean air reference in order for the HO2S 2 to function properly. This clean air reference is obtained by way of the HO2S 2 wires.