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Hey there
2002 kia magentis (optima USA), the speedometer is jumping around in drive, (up 20kmh in 1 sec, then swing back down) and in park, at zero, goes to 30 then back down.
I have an intermittent check engine light with a P0500 – vehicle speed sensor A.
I ran the scan tool on it, with live data, and i can see the VSS sensor is reading correctly at those times (VSS 0 in park while speedo is going nuts). On the test drive, the livedata also seems to work, changing with speed changes as normal.
Bad cluster or what?? I would expect the VSS reading to be jumping around if it was the sensor, right?
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