P0430 on Honda vehicles The catalytic converter on bank 2 is not cleaning up the exhaust as well as it should
P0430 is named on 12 Honda model years (2016–2025): 92 manufacturer filings and 46 owner reports in NHTSA’s files, across Pilot, Odyssey, Ridgeline, CR-V.
Which Honda model years name P0430
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2017 Honda Pilot | Engine | 17 | 12 |
| 2019 Honda Pilot | Fuel/Propulsion System | 6 | 14 |
| 2018 Honda Odyssey | Engine | 17 | 1 |
| 2016 Honda Pilot | Engine | 10 | 8 |
| 2017 Honda Ridgeline | Engine | 13 | — |
| 2019 Honda Odyssey | Engine | 6 | 5 |
| 2018 Honda Pilot | Engine | 6 | 2 |
| 2019 Honda Ridgeline | Engine | 6 | 1 |
| 2018 Honda Ridgeline | Engine | 6 | — |
| 2025 Honda Pilot | Engine | 5 | — |
| 2020 Honda Pilot | Fuel/Propulsion System | — | 2 |
| 2018 Honda CR-V | Fuel/Propulsion System | — | 1 |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
What Honda owners said
Source: NHTSA complaint databaseOwners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.
The contact associated the failure with Technical Service Bulletin: 21-010 (Warranty Extension: MIL Comes On with DTC P0420, P0430, P030x, and P219A/B (Without Software Update); however, the vehicle was not covered under the TSB
SAFETY RECALL NEGLIGENCE & POWERTAIN DAMAGE: At 95k miles, the vehicle displayed active check engine codes P0087 (Low Fuel Pressure), P0420, and P0430
Honda filings that name P0430
Source: NHTSA manufacturer communicationsBulletins and campaigns Honda filed with NHTSA whose summary names P0430. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- A17-036 Service bulletin2017-08-16 · Electrical System — Software
- Service bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [Bank 2]). The PCM software may misinterpret sensor inputs as a deteriorated catalytic converter.
- A17-036 Service bulletin2017-09-13 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
- Service bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [Bank 2]). The PCM software may misinterpret sensor inputs as a deteriorated catalytic converter.
- A17-036 Service bulletin2018-01-24 · Back Over Prevention
- Service bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [Bank 2]). The PCM software may misinterpret sensor inputs as a deteriorated catalytic converter.
- A19-073 Service bulletin2019-07-05 · Engine And Engine Cooling
- "The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [bank 2]). Additionally, one or more of the following DTCs may be stored: - P030X (misfire) - P219A (air-fuel ratio variation of cylinder [bank 1, rear bank]) - P219B (air-fuel ratio variation of cylinder [bank 2, front bank])"
- A19-073 Service bulletin2019-07-19 · Engine And Engine Cooling
- "Service Bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [bank 2]). Additionally, one or more of the following DTCs may be stored: -P030X (misfire) -P219A (air-fuel ratio variation of cylinder [bank 1, rear bank]) -P219B (air-fuel ratio variation of cylinder [bank 2, front bank])"
- A19-073 Service bulletin2019-08-09 · Engine And Engine Cooling
- "Service Bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [bank 2]). Additionally, one or more of the following DTCs may be stored: -P030X (misfire) -P219A (air-fuel ratio variation of cylinder [bank 1, rear bank]) -P219B (air-fuel ratio variation of cylinder [bank 2, front bank])"
- A17-036 Service bulletin2017-06-20 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
- Service bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [Bank 2]). The PCM software may misinterpret sensor inputs as a deteriorated catalytic converter.
- ATI&01142026905 Other2026-01-14 · Engine
- Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2025 Pilots with customer complaint of Check Engine Light (CEL) on with DTC P0420 [Catalyst System Efficiency Below Threshold (Bank 1)] and/or P0430 [Catalyst System Efficiency Below Threshold (Bank 2]] stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle.
- ATI&01302026904 Other2026-01-31 · Engine
- Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2025 Pilots with customer complaint of Check Engine Light (CEL) on with DTC P0420 [Catalyst System Efficiency Below Threshold (Bank 1)] and/or P0430 [Catalyst System Efficiency Below Threshold (Bank 2]] stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle.
- ATI&04132026905 Other2026-04-13 · Engine
- Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2025 Pilots with customer complaint of Check Engine Light (CEL) on with DTC P0420 [Catalyst System Efficiency Below Threshold (Bank 1)] and/or P0430 [Catalyst System Efficiency Below Threshold (Bank 2]] stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle.
What P0430 means
Source: SAE J2012 / OBD-IIThe catalytic converter on bank 2 is not cleaning up the exhaust as well as it should.
A stored code names the test that failed, never the part that caused it. The record above is what Honda and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs P0430 a known problem on Honda vehicles?
It is a documented one: NHTSA's files hold 92 manufacturer filings and 46 owner reports naming P0430 on 12 Honda model years (2016–2025). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Honda models does P0430 appear on most?
2017 Pilot (29 documents), 2019 Pilot (20 documents), 2018 Odyssey (18 documents).
Does P0430 on a Honda mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.