2014 Nissan Micra with OBDII code U1001

Question

The car starts okay (not so quick though), the automatic gear system picks fine and smoothly. But the idling is bad. The engine power cuts intermittently especially during stalled traffic. A local technician recommended changing the crank and cam sensor (done that but problem remains). Diagnosis gives several codes (including P2101, P2119, P0223 and U1001); All the codes vanish after clearing except the U1001 error code. I could really use some expert advice.

Answer 1

Hi there,

This code indicates an issue with the CAN communication. This is most likely a result of a poor harness ground connection. Here is some info for you.

U1001 NISSAN - Invalid or Missing Data for Primary Id
Read more: https://www.autocodes.com/u1001_nissan.html#disq