These 7 codes existed and stays there after I clear all codes, changed battery, 2 O2 sensors (b/c P0138 code). Please advise suggestions how/where to look into and repair. Below are the history records and info. (not sure if any are related symptoms?)
Questions: a. Is U0100 related to ABS module issues? b. Planning to get a new volt-meter to re-measure resistances of all speed sensors to help identify which sensor is bad. Or, should I go ahead to change all 4 sensors ?
Thank you for your time of reading , and suggestions.
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