P0430 on Acura vehicles The catalytic converter on bank 2 is not cleaning up the exhaust as well as it should
P0430 is named on 9 Acura model years (2016–2019): 54 manufacturer filings and 3 owner reports in NHTSA’s files, across TLX, RLX, MDX.
Which Acura model years name P0430
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2018 Acura TLX | Engine | 9 | — |
| 2017 Acura TLX | Electrical System | 8 | 1 |
| 2016 Acura TLX | Engine | 9 | — |
| 2017 Acura RLX | Electrical System | 7 | — |
| 2016 Acura RLX | Electrical System | 7 | — |
| 2016 Acura MDX | Electrical System | 5 | 1 |
| 2019 Acura TLX | Engine | 5 | — |
| 2017 Acura MDX | Electrical System | 4 | — |
| 2018 Acura MDX | Engine | — | 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 Acura 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.
They also pulled code P0430 (Catalyst System Efficiency) showing my front catalytic converter has failed, costing $2,461.77
Acura filings that name P0430
Source: NHTSA manufacturer communicationsBulletins and campaigns Acura 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.
- B17-034 Service bulletin2017-08-23 · Electrical System — Software
- Service bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [Bank 2]).
- B17-034 Service bulletin2017-09-13 · Electrical System
- 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.
- B17-034 Service bulletin2017-10-12 · 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.
- B17-034 Service bulletin2018-01-24 · 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.
- B17-019 Service bulletin2017-04-15 · 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.
- B17-019 Service bulletin2017-09-13 · Electrical System
- Service bulletin - This bulletin is replaced by S/B 17-034, MIL Comes On with DTC P0430 (Front Bank Catalyst System Efficiency Below Threshold [Bank 2])
- B15-053 Service bulletin2017-05-17 · 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.
- BPaS10172018906 Service bulletin2018-10-17 · Engine And Engine Cooling
- Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2015-2019 TLXs with a client complaint of the Malfunction Indicator Lamp (MIL) on with DTC P0420 (Rear Bank Catalyst System Efficiency Below Threshold [Bank 2]) and/or P0430 (Front Bank Catalyst Sytem Efficiency Below Threshold [Bank 2]) stored. To fully understand the cause of this condition, AHM would like to inspect
- BPaS11052018904 Service bulletin2018-11-05 · Engine And Engine Cooling
- Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2015-2019 TLXs with a client complaint of the Malfunction Indicator Lamp (MIL) on with DTC P0420 (Rear Bank Catalyst System Efficiency Below Threshold [Bank 2]) and/or P0430 (Front Bank Catalyst Sytem Efficiency Below Threshold [Bank 2]) stored. To fully understand the cause of this condition, AHM would like to inspect
- BPaS11262018905 Service bulletin2018-11-26 · Engine And Engine Cooling — Exhaust System — Emission Control — Catalytic Convertor
- Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2015-2019 TLXs with a client complaint of the Malfunction Indicator Lamp (MIL) on with DTC P0420 (Rear Bank Catalyst System Efficiency Below Threshold [Bank 2]) and/or P0430 (Front Bank Catalyst Sytem Efficiency Below Threshold [Bank 2]) stored. To fully understand the cause of this condition, AHM would like to inspect
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 Acura 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 Acura vehicles?
It is a documented one: NHTSA's files hold 54 manufacturer filings and 3 owner reports naming P0430 on 9 Acura model years (2016–2019). 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 Acura models does P0430 appear on most?
2018 TLX (9 documents), 2017 TLX (9 documents), 2016 TLX (9 documents).
Does P0430 on a Acura 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.