P0430 on Dodge Durango
Catalyst System Efficiency Below Threshold Bank 2
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Dodge Durango 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 Dodge Durango
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 Dodge Durango Owner Reports
Source: NHTSA Complaints Database
"My 2005 Durango all of a sudden has decided to stall while driving . I've bought this vehicle almost 2 years ago, and this is by far the scariest experience I've had in it. The first time it happened was as I was slowing down to stop at a red light on January 17th."
"Upon fueling the vehicle a significant amount of gas would spew out getting hands/clothes/ground wet with gasoline. this happens at erratic times, never a rhyme or reason. looked into the problem when it first occurred and saw no recall information. now vehicle is reading a p0430 code, o2 sensors."
"Upon fueling the vehicle a significant amount of gas would spew out getting hands/clothes/ground wet with gasoline. this happens at erratic times, never a rhyme or reason. looked into the problem when it first occurred and saw no recall information. now vehicle is reading a p0430 code, o2 sensors."
"The check engine light keeps coming on showing code p0430. this code shows bank 2 catalytic converter. i had the catalytic converter changed and short time later the code showed up again."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Dodge Durango
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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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.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.