P0172 on Toyota vehicles The engine is running rich on bank 1: too much fuel for the air going in
P0172 is named on 7 Toyota model years (2016–2019): 14 manufacturer filings and 0 owner reports in NHTSA’s files, across Sequoia, Tundra.
Which Toyota model years name P0172
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2019 Toyota Tundra | Equipment Adaptive/Mobility | 2 | — |
| 2018 Toyota Sequoia | Engine | 2 | — |
| 2018 Toyota Tundra | Engine | 2 | — |
| 2017 Toyota Sequoia | Engine | 2 | — |
| 2017 Toyota Tundra | Equipment Adaptive/Mobility | 2 | — |
| 2016 Toyota Sequoia | Engine | 2 | — |
| 2016 Toyota Tundra | Engine | 2 | — |
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.
Toyota filings that name P0172
Source: NHTSA manufacturer communicationsBulletins and campaigns Toyota filed with NHTSA whose summary names P0172. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- T-SB-0166-19 Service bulletin2019-12-06 · Engine
- TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0058-13. Service Bulletin No. T-SB-0058-13 is obsolete and any printed versions should be discarded. Some 2009 ? 2018 model year Sequoia and 2009 ? 2019 model year Tundra vehicles equipped with a 3UR-FBE engine may exhibit a hard start and/or MIL ON condition with one or more of the following D
- T-SB-0166-19_Rev Service bulletin2020-01-23 · Engine And Engine Cooling
- TSB: REVISION NOTICE January 23, 2020 Rev1: G1439 The Parts Information, Calibration Information, and Repair Procedure sections have been updated. SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0058-13. Service Bulletin No. T-SB-0058-13 is obsolete and any printed versions should be discarded. Some 2009 ? 2018 model year Sequoia and 2009 ? 2019
What P0172 means
Source: SAE J2012 / OBD-IIThe engine is running rich on bank 1: too much fuel for the air going in.
A stored code names the test that failed, never the part that caused it. The record above is what Toyota 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 P0172 a known problem on Toyota vehicles?
It is a documented one: NHTSA's files hold 14 manufacturer filings and 0 owner reports naming P0172 on 7 Toyota 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 Toyota models does P0172 appear on most?
2018 Sequoia (2 documents), 2017 Sequoia (2 documents), 2016 Sequoia (2 documents).
Does P0172 on a Toyota 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.