Hi my golf has had the abs light and airbag light on all the time. I changed all the sensors on the abs and still had the light on. Ive then bought a code reader and checked the abs and airbag codes. The air bag was showing low voltage and a circuit issue. I cleared them and re tested and no codes now and the warning light has gone off

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I checked the abs and it was showing low voltage and 3 sensor problems. again i cleared the codes and re ran the scan and its just showing front right sensor now. Does this meen I have fitted the sensor wrong? and i should be taking it out and re fitting it? then doing the scans again?