P0430 on DODGE DURANGO — Catalyst System Efficiency Below Threshold Bank 2

Q: "What does P0430 mean on a DODGE DURANGO?"

"P0430 indicates: Catalyst System Efficiency Below Threshold Bank 2. This is a emission controls code. 4 DODGE DURANGO owners have reported this to NHTSA."

Q: "What are the most common causes of P0430 on DODGE DURANGO?"

"Based on 4 NHTSA reports, the most commonly cited components are: Fuel/Propulsion System, Power Train, Engine. These percentages are based on the component field in owner complaints."

Q: "Is P0430 serious on my DODGE DURANGO?"

"Of 4 NHTSA reports for this code on DODGE DURANGO, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my DODGE DURANGO shows P0430?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

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.

4 DODGE DURANGO owners have reported this issue to NHTSA across model years 2005-2014. Most reports come from the 2007, 2005 model years. The most commonly reported component is Fuel/Propulsion System (50.0% of reports).

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."

— 2005 DODGE DURANGO owner · POWER TRAIN · Filed 01/17/2023

"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."

— 2007 DODGE DURANGO owner · FUEL/PROPULSION SYSTEM · Filed 06/30/2014

"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."

— 2007 DODGE DURANGO owner · FUEL/PROPULSION SYSTEM · Filed 11/01/2013

"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."

— 2014 DODGE DURANGO owner · ENGINE · Filed 03/10/2016

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1

'05

2

'07

1

'14

Common Causes on DODGE DURANGO

Based on NHTSA complaint component analysis for this vehicle.

FUEL/PROPULSION SYSTEM 50%

POWER TRAIN 25%

ENGINE 25%

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.

Frequently Asked Questions

What does P0430 mean on a DODGE DURANGO? ▾

P0430 indicates: Catalyst System Efficiency Below Threshold Bank 2. This is a emission controls code. 4 DODGE DURANGO owners have reported this to NHTSA.

What are the most common causes of P0430 on DODGE DURANGO? ▾

Based on 4 NHTSA reports, the most commonly cited components are: Fuel/Propulsion System, Power Train, Engine. These percentages are based on the component field in owner complaints.

Is P0430 serious on my DODGE DURANGO? ▾

Of 4 NHTSA reports for this code on DODGE DURANGO, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my DODGE DURANGO shows P0430? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.