DTC P1131, P1151
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HEATED OXYGEN SENSOR (HO2S) NOT SWITCHING - UPSTREAMDetection Condition/Possible Cause (Part 1):
Detection Condition/Possible Cause (Part 2):
Step 1-Step 4:
Step 5-Step 8:
Step 9-Step 11:
Step 12-Step 14:
Step 15-Step 18:
Step 19-Step 21: