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Posts Tagged: Nissan P1421

Nissan P1421

Diagnose and fix Nissan P1421 Nissan has issued a service bulletin # NTB09-116a to address a Nissan P1421 COLD START CONTROL trouble code on all 2007 – 2010 Versa models with the MR18DE engine ONLY. The check engine light will appear and this Nissan P1421 trouble code will be stored. You won’t notice any drivability issues. Nissan service bulletin # NTB09-116a The bulletin advises owners to update the ECM software with a newer version. However, before you do that, shops find that cleaning the throttle body usually solves the problem. … Read More


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