What does Code b2148 mean

Question

when driving the engine will just shut off, wait a while say an hour it will restart and do the same thing

Answer 1

B2148 PMW input circuit failure

This code is for the body control, such as the door locks, power seat memory, This has nothing to do with the engine just shutting down. There are 2 known causes for this condition one is the camshaft position sensor, and the other the CKP (crank position sensor). You can also do a KOER (Key on engine running) test with a scan tool , problem is because the engine is in a running condition during the test a code condition may not show, It is to your advantage replace the camshaft position sensor.