P0133 on Jeep vehicles The upstream bank 1 oxygen sensor is responding too slowly to be trusted

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.

Owners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.

Bulletins and campaigns Jeep filed with NHTSA whose summary names P0133. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• 23-019-25 REV. A Service bulletin
  2025-04-26 · 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
• 18-011-25 REV. A Service bulletin
  2025-07-25 · 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
• 18-011-25 REV. B Service bulletin
  2025-08-01 · 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
• 23-019-25 Service bulletin
  2025-04-22 · 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
• 18-078-25 Service bulletin
  2025-08-12 · 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
• S1918000008 Rev. Service bulletin
  2021-01-16 · Engine And Engine Cooling
• Customer's complaint may include a MIL-on with one or more of the following DTCs (Active, Pending, or Stored) in the PCM: P0133, P0137, P0171, P0300, P2096. The root cause could be due to oil leaking from Bank 1 valve cover seal on to the 1/2 (Bank 1 downstream) O2 sensor. This can adversely affect the 1/2 O2 sensor signal reading and lead to listed DTCs. Before performing normal diagnostic routin
• S1918000008 Service bulletin
  2021-06-19 · Back Over Prevention
• Customer?s complaint may include a MIL-on with one or more of the following DTCs Active, Pending, or Stored in the PCM: P0133, P0137, P0171, P0300, P2096. The root cause could be due to oil leaking from Bank 1 valve cover seal on to the 1/2 Bank 1 downstream O2 sensor. This can adversely affect the 1/2 O2 sensor signal reading and lead to listed DTCs. Before performing normal diagnostic routines f
• S1918000008 Rev. Service bulletin
  2021-01-16 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
• Customer?s complaint may include a MIL-on with one or more of the following DTCs (Active, Pending, or Stored) in the PCM: P0133, P0137, P0171, P0300, P2096. The root cause could be due to oil leaking from Bank 1 valve cover seal on to the 1/2 (Bank 1 downstream) O2 sensor. This can adversely affect the 1/2 O2 sensor signal reading and lead to listed DTCs. Before performing normal diagnostic routin
• S1918000008 Service bulletin
  2021-08-12 · Engine And Engine Cooling
• Customer?s complaint may include a MIL-on with one or more of the following DTCs (Active, Pending, or Stored) in the PCM: P0133, P0137, P0171, P0300, P2096. The root cause could be due to oil leaking from Bank 1 valve cover seal on to the 1/2 (Bank 1 downstream) O2 sensor. This can adversely affect the 1/2 O2 sensor signal reading and lead to listed DTCs. Before performing normal diagnostic routin
• S1918000008RevC Service bulletin
  2021-08-12 · Back Over Prevention
• Customer?s complaint may include a MIL-on with one or more of the following DTCs (Active, Pending, or Stored) in the PCM: P0133, P0137, P0171, P0300, P2096. The root cause could be due to oil leaking from Bank 1 valve cover seal on to the 1/2 (Bank 1 downstream) O2 sensor. This can adversely affect the 1/2 O2 sensor signal reading and lead to listed DTCs. Before performing normal diagnostic routin
• 18-014-16 Service bulletin
  2016-02-12 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
• Flash: 2.4L Powertrain Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, the technician may find one or more of the following Diagnostic Trouble Codes (DTCs): · **P0101 - Mass Air
• 18-014-16 REV. A Service bulletin
  2016-03-31 · Power Train
• Flash: 2.4L Powertrain Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, the technician may find one or more of the following Diagnostic Trouble Codes (DTCs): · P0101 - Mass Air Flow

A stored code names the test that failed, never the part that caused it. The record above is what Jeep and its owners have filed about it; the code’s page across every make has the whole file.