66. (01000001) Pressure Transducer Error [Ptx Frequency > 90 kHz]
Note: this supersedes Fault code 65 from V41 Motor controller code onwards.
The Motor Control module has received signals from the water level sensor (Ptx)
above normal frequency values.
Primary Source: Motor Control module
Action: Replace Motor Control module
I took this from the service repair manual. Hope it helps.
Frank
December 2006