2013 Nissan 370z Repair Guides
P04202013 Nissan 370Z P0420 — Catalyst System Efficiency Below Threshold Diagnosis & Fix
Complete diagnostic guide for 2013 Nissan 370Z P0420 (Catalyst System Efficiency Below Threshold). Symptoms, causes, and step-by-step repair procedures for Nissan's Nissan's EGR systems.
Moderate
1-2 hours
P04212013 Nissan 370Z P0421 — Warm Up Catalyst Efficiency Below Threshold Diagnosis & Fix
Complete diagnostic guide for 2013 Nissan 370Z P0421 (Warm Up Catalyst Efficiency Below Threshold). Symptoms, causes, and step-by-step repair procedures for Nissan's Nissan's EGR systems.
Moderate
1-2 hours