P1320 Nissan -

Question

Have 2000 Nissan Sentra, running fine, with code P1320. After replacing coils with aftermarket ones,the code came back on. Took the car to a local Nissan dealer were they replaced the coils with ome s but the code came back. There was proper power to the connector but the alternator was bleeding power to the case.They suggested to replace the alternator an if that did not work the ECM coud be bad, it was time for me to get out, They did not had a clue were the problem was. To verify if the alternator could be the problem, the alternator was taken out of the circuit, by me, and the code was erased but it came back.