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What means code P0328, P0442, P0456 for nissan frontier 20

 
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What means code P0328, P0442, P0456 for nissan frontier 2002

Submitted: 898 days and 18 hours ago.
Category: Nissan
Value: $15
Status: CLOSED
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Expert:  carguy1 replied 898 days and 18 hours ago.

Greetings Sir or Madam and welcome to JA! I will do my very best to assist you with your problem.
P0 328 knock sensor
P0442 means there is an evap system leak.
P0456 means the same but is pointing towards the vent control valve as the possible cause.
442 and 446 pretty much run together.
The knock sensor code is really nothing to worry about. It is so minimul it won't even turn the light on.
Please reply if needed!

 
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