TwinTurbo.NET: Nissan 300ZX forum - Code 21
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Subject Code 21
     
Posted by ZideWayz on July 03, 2013 at 9:59 AM
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Message I'm getting code 21 with the new style PTU as soon as I turn the ignition on without starting the engine. If i try to reset it will come right back. The odd thing is the car starts and runs perfectly without any hesitation or things like that. I have tried to clean PTU-harness, ground connections, swapped to another PTU with no luck. Is there anything else that may throw 21? Ignition coils?

The car is a 1990 TT euro-model. Thanks in advance.

     
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