Posts Tagged: Nissan P1421

Nissan Versa P1421 code: Service Bulletin Fix

December 21, 2020

Diagnose and fix a Nissan Versa P1421 code using the Nissan Service Bulletin Fix Nissan has issued a service bulletin # NTB09-116a to address a P1421 code COLD START CONTROL trouble code on all 2007 – 2010 Versa models with the MR18DE engine ONLY. The check engine light will appear, and a Nissan P1421 code will be stored. You won’t notice any drivability issues. Service bulletin # NTB09-116a Describes What Causes the Nissan Versa P1421 Code The bulletin advises owners to update the ECM software to a newer version. However, … Read More