I have an engine code u1000 for my 05 nissan altima whats that mean?Nissan Factory Service Bulletin OBDII Code U1000 The service bulletin suggests cleaning engine and body harness ground connection to repair the problem Clean/retighten ECM ground connections Clean/retighten negative battery cable body connection and battery post connection If needed, clean and ensure good contact between the steering member assemblyThe trouble code U1000 is a vehicle specific code primarily found on Chevrolet, GMC and Nissan vehicles It refers to a "Class 2 communications failure" Generally, this code will precede an additional code that identifies the module or area of the failure The second code may be generic or vehicle specific
U1000 Class 2 Serial Communication Problem Fasrspan
