I HAVE A 2000 MAXIMA WITH CODE PO1320

Question

COILS ARE OK I CHENGE ALL SPARK PLUGS
AND THE ENGINE LIGHT STILL ON
ANYBODY CAN HELP

Answer 1

HI there,

The nissan factory repair for this code is to replace all the coils. You may have tested the resistance on the coils and they showed they were good, however it's not the best test. Sometimes it takes certain conditions to make them fail. My experience has been usually when they are hot from driving is when they fail. If you pulled them off a cool engine and tested them, they could appear to be fine but still have issues.

Comments

My suggestion, first check coil wires to ensure they are not loose. You could be having problem with fuel injector or the plug.