P0133 The upstream bank 1 oxygen sensor is responding too slowly to be trusted
1 owner report and 288 manufacturer filings across 46 model years from Dodge, Fiat, Ford, Jeep and others.
Where P0133 shows up
Source: NHTSA manufacturer communications and complaintsShowing the 25 model years where P0133 appears most; it is on file for 46 in total.
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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P0133 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P0133 on that maker’s vehicles.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
Since then, my vehicle has had its check engine light go on SIX TIMES with a P0133 alert which refers to an O2 sensor
288 manufacturer filings name P0133. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P0133.
- SSM 54948 Service bulletin2026-06-18 · Fuel/Propulsion System
- Some 2025-2026 Explorer/Aviator/Police Interceptor Utility non-hybrid vehicles built on 06-Feb-2025 and through 13-Dec-2025 may exhibit various drivability symptoms including a rough idle or hesitation shortly after refueling. These symptoms may also be accompanied by liquid fuel in the fuel vapor lines and fuel vapor canister as well as an illuminated malfunction indicator lamp (MIL) with diagnos
- 18-078-25 Service bulletin2025-08-12 · Unknown Or Other
- Not applicable to vehicles built for US market. Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0133 - O2 Sensor 1/1 Slow response. ● P2453 - Particulate Filter Pressure Sensor “A” Circuit Range/Performance. ● P245F - Particulate
- 18-011-25 REV. B Service bulletin2025-08-01 · Unknown Or Other
- Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0133 - O2 Sensor 1/1 Slow response. ● P2453 - Particulate Filter Pressure Sensor “A” Circuit Range/Performance. ● P245F - Particulate Filter Pressure Sensor “B” Circuit Range/Perfor
- 18-011-25 REV. A Service bulletin2025-07-25 · Unknown Or Other
- Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0133 - O2 Sensor 1/1 Slow response. ● P2453 - Particulate Filter Pressure Sensor “A” Circuit Range/Performance. ● P245F - Particulate Filter Pressure Sensor “B” Circuit Range/Perf
- 23-019-25 REV. A Service bulletin2025-04-26 · Structure — Body
- Multiple Systems Repair Bundle Campaign Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0133 - O2 Sensor 1/1 Slow Response. ● P2251 - O2 Sensor 1/1 Negative Current Control Circuit/Open. ● P0131 - O2 Sensor 1/1 Circuit Low. ● P2626 - O2 Sensor 1/1 Pump Cell Current Trim Circu
- 23-019-25 Service bulletin2025-04-22 · Unknown Or Other
- "Multiple Systems Repair Bundle Campaign Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0133 - O2 Sensor 1/1 Slow Response. ● P2251 - O2 Sensor 1/1 Negative Current Control Circuit/Open. ● P0131 - O2 Sensor 1/1 Circuit Low. ● P2626 - O2 Sensor 1/1 Pump Cell Current Trim Circ
What P0133 means
Source: SAE J2012 / OBD-IIThe upstream bank 1 oxygen sensor is responding too slowly to be trusted.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P0133
Source: NHTSA files and the OBD-II standardCan I keep driving with P0133 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.