Thread: hypertech obd1 code 51
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Old 11-06-2010, 12:18 AM
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Blue Bowtie Blue Bowtie is offline
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Re: hypertech obd1 code 51
51 is a PROM checksum error. The broadcast code for the PROM must be the same (or compatible with) the ECM and firmware.

You can clear the code by disconnecting the battery but it will likely return.
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