what is this code hr 5221 on a 2004 Dodge Ram 1500?
Hi, I replaced a o2 sensor since I went to Autozone to get it tested. Told me it
was a o2 sensor. So I got it replaced. Went to turn my truck on, and well the
engine light was still on. Did the routine to see what code will pop up, and it
gave me hr 5221. I can't seem to figure out what that code means. Can I get
some help on this situation? Thanks!
Usually it is a P code.....have not seen an HR code Is this from the AutoZone scan tool? or something else??
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