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Q: check engine light on 1996 Nissan 200SX

Had a diagnostic test done one on my car. readings were as follows P0100 and P1320. Replaced mass air flow sensor. My check engine light is still on. What other possible issues could be causing the check engine light to be on?
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P0100 is an airflow meter related problem. I have seen a lot of poorly re manufactured air flow meters you get the code replace the air flow meter, beat yourself up doing more testing only to fine the air flow meter you got is bad. A good scan tool will test air flow values and an oscilloscope can be used to test the airflow meter signal. I have seen the ground wire break in the harness next to the airflow meter.
P1320 relates to a problem in the distributor (also unfortunately common). Remove the distributor cap and see if the distributor is full of oil.
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