P2254 · Manufacturer communications

JEEP · 2026-10-10

Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P2237-00 - O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1. ● P2240-00 - O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1. ● P2251-00 - O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1. ● P2254-00 - O2 Sensor Negative Current Control Circuit/Open Bank 2 Sensor 1. ● P2243-00 - O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1. ● P2247-00 - O2 Sensor Reference Voltage Circuit/Open Bank 2 Sensor 1. ● P015B-00 - O2 Sensor Delayed Response - Lean To Rich Bank 1 Sensor 1. ● P015D-00 - O2 Sensor Delayed Response - Lean…

JEEP · 2026-10-10

Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P2237-00 - O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1. ● P2240-00 - O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1. ● P2251-00 - O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1. ● P2254-00 - O2 Sensor Negative Current Control Circuit/Open Bank 2 Sensor 1. ● P2243-00 - O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1. ● P2247-00 - O2 Sensor Reference Voltage Circuit/Open Bank 2 Sensor 1. ● P015B-00 - O2 Sensor Delayed Response - Lean To Rich Bank 1 Sensor 1. ● P015D-00 - O2 Sensor Delayed Response - Lean…

RAM · 2026-10-06

Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P2237-00 - O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1. ● P2240-00 - O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1. ● P2251-00 - O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1. ● P2254-00 - O2 Sensor Negative Current Control Circuit/Open Bank 2 Sensor 1. ● P2243-00 - O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1. ● P2247-00 - O2 Sensor Reference Voltage Circuit/Open Bank 2 Sensor 1. ● P015B-00 - O2 Sensor Delayed Response - Lean To Rich Bank 1 Sensor 1. ● P015D-00 - O2 Sensor Delayed Response - Lean To…

RAM · 2026-10-03

Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P2237-00 - O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1. ● P2240-00 - O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1. ● P2251-00 - O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1. ● P2254-00 - O2 Sensor Negative Current Control Circuit/Open Bank 2 Sensor 1. ● P2243-00 - O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1. ● P2247-00 - O2 Sensor Reference Voltage Circuit/Open Bank 2 Sensor 1. ● P015B-00 - O2 Sensor Delayed Response - Lean To Rich Bank 1 Sensor 1. ● P015D-00 - O2 Sensor Delayed Response - Lean…

CADILLAC, CHEVROLET · 2022-09-16

This service bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated with DTC P2251 and/or DTC P2254 Set.

CHEVROLET · 2022-04-21

This service bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated with DTC P2251 and/or DTC P2254 Set.

CHEVROLET · 2022-02-17

This service bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated with DTC P2251 and/or DTC P2254 Set.

CHEVROLET · 2022-01-27

This service bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated with DTC P2251 and/or DTC P2254 Set.

LAND ROVER · 2015-10-15

"ISSUE: THE CUSTOMER MAY OBSERVE A MIL IN THE INSTRUMENT CLUSTER RELATING TO THE ENGINE SYSTEM (CHECK ENGINE LIGHT) AND ONE OR MORE CODES STORED IN THE PCM RELATING TO HEATED OXYGEN SENSOR (HO2S) IN THE EXHAUST SYSTEM. THE CODE WILL REFER TO A FAULT WITH THE PRE, OR MID, OR POST CATALYST HEATED OXYGEN SENSOR: P0030, P0031, P00D1, P0130, P0131, P0132, P0133, P0134, P0135, P014C, P2195, P2196, P2231, P2237, P2243, P2245, P2251, P2297, P2626, P2A00, P0050, P0051, P00D3, P0150, P0151, P0152, P0153, P0154, P0155, P2197, P2198, P2234, P2240, P2247, P2254, P0037, P0038, P0054, P0136, P0137, P0138, P0139, P013A, P013E, P0140, P0141, P2270, P2271, P0056, P0057, P0060, P013C, P014A, P0156, P0157, P0158, P0159, P0160, P0161, P2272, P2273, P0042, P0043, P0044, P0055, P0142, P0143, P0144, P0147,…