P0430 on Nissan Pathfinder
Catalyst System Efficiency Below Threshold Bank 2
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Nissan Pathfinder context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0430.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0430 Means on Your Nissan Pathfinder
P0430 is a diagnostic trouble code indicating: Catalyst System Efficiency Below Threshold Bank 2. This code relates to the emission controls system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Nissan Pathfinder Owner Reports
Source: NHTSA Complaints Database
"The issues with the vehicle began at 133834 miles. when driving, at times it would vibrate out of nowhere. after a stop, it would shift up hard or fail to downshift and then hit hard when it finally would go in to gear."
"The engine began to fail because of a lack of adequate breathability into the crankcase, causing high crankcase pressure, excessive oil blowby, severe exhaust smoke, severe engine sludge, severe engine shuddering, and lack of response to the power steering because of engine power loss."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Nissan Pathfinder
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
-
1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
-
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
-
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.