P0430 on HONDA PILOT — Catalyst System Efficiency Below Threshold Bank 2

Q: "What does P0430 mean on a HONDA PILOT?"

"P0430 indicates: Catalyst System Efficiency Below Threshold Bank 2. This is a emission controls code. 32 HONDA PILOT owners have reported this to NHTSA."

Q: "What are the most common causes of P0430 on HONDA PILOT?"

"Based on 32 NHTSA reports, the most commonly cited components are: Fuel/Propulsion System, Engine,Fuel/Propulsion System, Electrical System,Engine. These percentages are based on the component field in owner complaints."

Q: "Is P0430 serious on my HONDA PILOT?"

"Of 32 NHTSA reports for this code on HONDA PILOT, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my HONDA PILOT 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 HONDA PILOT

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.

32 HONDA PILOT owners have reported this issue to NHTSA across model years 2016-2020. Most reports come from the 2017, 2019 model years. The most commonly reported component is Fuel/Propulsion System (59.4% of reports).

Real HONDA PILOT Owner Reports

Source: NHTSA Complaints Database

"My vehicle suffered a catastrophic failure of the exhaust and engine systems directly caused by the defective fuel injection system identified in Service Bulletin 20-100."

— 2016 HONDA PILOT owner · ENGINE,FUEL/PROPULSION SYSTEM · Filed 05/01/2025

"Check engine light on emissions system problem and transmission system problem, there is loss power of engine light, after 2 gear transmission feel like it jerks I don't have save to drive my car, i would like to request a recall to be inspected and repair by warranty of Honda because my car is de"

— 2016 HONDA PILOT owner · ELECTRICAL SYSTEM,ENGINE · Filed 05/26/2025

"My car got recall from Honda on:  P0420 (rear bank catalyst system efficiency below threshold [bank 1])  P0430 (front bank catalyst system efficiency below threshold [bank 2])  P0300-P0306 (misfire)  P219A (air-fuel ratio variation of cylinder [bank 1, rear bank])  P219B (air-fuel ratio variati"

— 2016 HONDA PILOT owner · FUEL/PROPULSION SYSTEM,FORWARD COLLISION AVOIDANCE · Filed 03/15/2023

"The components that have failed are the fuel injectors and catalytic converter. This is according to the Honda dealerships diagnostics. Whenever I press the gas the car hesitates, shudders, shakes, and wont accelerate. This has been an ongoing issue for the past 4 years when the car was 1 year old."

— 2016 HONDA PILOT owner · FUEL/PROPULSION SYSTEM · Filed 02/01/2018

"We bought a 2016 honda pilot ex awd from a dealer a month ago with 62k miles on it. three days ago an emission system problem and check engine light came on. we took it to the honda dealer immediately and the codes were p0430 and p219b."

— 2016 HONDA PILOT owner · ENGINE,FUEL/PROPULSION SYSTEM · Filed 10/18/2019

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

📊 Complaint Trend by Model Year

7

'16

12

'17

2

'18

9

'19

2

'20

Common Causes on HONDA PILOT

Based on NHTSA complaint component analysis for this vehicle.

FUEL/PROPULSION SYSTEM 59.4%

ENGINE,FUEL/PROPULSION SYSTEM 18.8%

ELECTRICAL SYSTEM,ENGINE 3.1%

FUEL/PROPULSION SYSTEM,FORWARD COLLISION AVOIDANCE 3.1%

ENGINE 3.1%

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 HONDA PILOT? ▾

P0430 indicates: Catalyst System Efficiency Below Threshold Bank 2. This is a emission controls code. 32 HONDA PILOT owners have reported this to NHTSA.

What are the most common causes of P0430 on HONDA PILOT? ▾

Based on 32 NHTSA reports, the most commonly cited components are: Fuel/Propulsion System, Engine,Fuel/Propulsion System, Electrical System,Engine. These percentages are based on the component field in owner complaints.

Is P0430 serious on my HONDA PILOT? ▾

Of 32 NHTSA reports for this code on HONDA PILOT, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my HONDA PILOT 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.