I have a 2005 Nissan Altima that keeps giving the U1000 and U1001 codes. The dealer has cleaned and tighten all the ECM gounds, dash frame ground and changed the battery. The second time they soldered grounds at terminals. Third time they replaced the TCM control unit. The fourth time they replaced the ECM. The car went into limp mode again today, autozone said the codes are once again U1000 and U1001. Does anyone know how to get this issue fixed?
Getting a different car is not an option at this time.
Getting a different car is not an option at this time.