Question about 2005 Hyundai Santa Fe

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Codes p0300 and p0720

Just purchased this hyundai sante fe 2001 a month ago. anyone have any idea what these codes mean and what i need to do to correct them?

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  • bigking7 Nov 29, 2008

    thanks not sure when the plugs were last changed. i just got a set of bosch platinum i'm putting in tomorrow. i was thinking along those lines. yes the shifting has been erratic. will my local auto parts store have the shaft speed sensor or is it a dealer part? how hard is that to replace?

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P0720 Output shaft speed (OSS) sensor �C circuit malfunction Wiring, OSS sensor, ECM/TCM


probably have shifting issues too the p0300 is a random misfire check spark plugs















Posted on Nov 27, 2008

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The P0300 is down to a cylinder misfire, usually it will have a number like 0302 where the 2 would mean the misfire is in number 2 cylinder. When were the plugs and wires last changed? what milage is on the vehicle?
P0720 is the output shaft speed sensor seems to be more of a common problem on the older hyundai's, is the gear change smooth or erratic? has it ever locked itself into gear? if you clear these codes how quickly do they come back?

Posted on Nov 27, 2008

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