P20EE on Ford vehicles The selective catalytic reduction catalyst is not reducing NOx to standard

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 Ford filed with NHTSA whose summary names P20EE. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• TSB 17-0017 Service bulletin
  2017-02-23 · Power Train
• SOME 2017 F-SUPER DUTY VEHICLES EQUIPPED WITH A 6.7L ENGINE AND BUILT ON OR BEFORE 20-FEB-2017 MAY EXHIBIT AN ILLUMINATED MIL WITH DIAGNOSTIC TROUBLE CODES (DTCS) P20EE, P2002, P2201, P246C AND/OR P2463. REPROGRAM THE POWERTRAIN CONTROL MODULE (PCM) TO THE LATEST CALIBRATION USING IDS RELEASE 104.02 OR HIGHER. MAKE SURE YOU ARE CONNECTED TO THE INTERNET WHEN ENTERING MODULE PROGRAMMING TO OBTAIN T
• TSB17-0054 Service bulletin
  2017-07-11 · Engine
• Some 2017 F-Super Duty vehicles equipped with a 6.7L engine and built on or before 12-May-2017 may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P20EE, P2459, P2201, P246C and/or P2463. Follow the Service Procedure steps to correct the condition.
• TSB18-2005 Service bulletin
  2018-01-09 · Engine And Engine Cooling
• Some 2017 F-Super Duty vehicles equipped with a 6.7L engine and built on or before 7-Nov-2017 may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P20EE, P2459, P2201, P246C and/or P2463. Follow the Service Procedure steps to correct the condition.
• SSM 49063 Service bulletin
  2020-08-11 · Power Train
• Some 2017-2020 F-Super Duty vehicles equipped with a 6.7L diesel engine may exhibit an illuminated malfunction indicator lamp (MIL) and diagnostic trouble code (DTC) P20EE. The Powertrain Controls and Emissions Diagnosis (PC/ED) pinpoint test RD15 has been updated to perform a diesel particulate filter (DPF) manual regeneration with the appropriate Ford diagnostic scan tool twice along with perfor
• SSM 49065 Service bulletin
  2020-08-11 · Fuel System, Diesel
• Some 2011-2020 F-Super Duty, 2015-2019 Transit, 2016-2021 F-650/F-750 and 2018-2020 F-150 vehicles equipped with a 6.7L, 3.2L or 3.0L engine may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P207F, P20EE, P229F, P2201 and/or P24AE. This may be a result of using aftermarket cleaning liquids or tools for the exhaust gas recirculation (EGR) cooler or intake. Ford does not recommend
• SSM 49202 Service bulletin
  2020-09-24 · Electrical System
• Some 2017-2020 F-Super Duty vehicles equipped with a 6.7L diesel engine may exhibit an illuminated malfunction indicator lamp (MIL) and diagnostic trouble code (DTC) P20EE. The Powertrain Controls and Emissions Diagnosis (PC/ED) pinpoint test RD15 has been updated to perform a Diesel Particulate Filter (DPF) Manual Regeneration twice along with performing the Specified Function SCR Parameter Reset
• SSM 46706 Service bulletin
  2017-07-18 · Engine
• Some 2013-2016 F-Super Duty/2015-2017 Transit/2016-2017 F650-750 vehicles equipped with a diesel engine may exhibit DTC P207F and/or P20EE (Reductant Quality Performance) in the powertrain control module (PCM). When repairing DTC P207F or P20EE, refer to the online version of the powertrain control/emission diagnostic (PC/ED) manual for the latest diagnostics. The pinpoint test RD and diagnostic t
• SSM 46824 Service bulletin
  2017-09-18 · Engine
• Some 2013-2017 F-Super Duty/2015-2017 Transit/2016-2017 F650-750 vehicles equipped with a diesel engine may exhibit DTC P207F and/or P20EE (Reductant Quality Performance) in the powertrain control module (PCM). When repairing DTC P207F or P20EE, refer to the online version of the powertrain control/emission diagnostic (PC/ED) manual for the latest diagnostics. The pinpoint test RD and diagnostic t
• SSM 47641 Service bulletin
  2018-11-01 · Engine And Engine Cooling — Exhaust System — Emission Control — Gas Recirculation Valve (Egr Valve)
• Some 2011-2019 F-Super Duty, 2015-2019 Transit, 2016-2019 F-650/F-750 and 2018 F-150 vehicles equipped with a 6.7L, 3.2L or 3.0L engine may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P207F, P20EE, P229F, P2201 and/or P24AE. This may be a result of using aftermarket cleaning liquids or tools for the exhaust gas recirculation (EGR) cooler or intake. Ford does not recommend the c
• TSB 19-2083 Service bulletin
  2019-03-19 · Engine And Engine Cooling
• Some 2018 F-Super Duty vehicles equipped with a 6.7L diesel engine may exhibit an illuminated malfunction indicator lamp (MIL) with only diagnostic trouble codes (DTCs) P00BD, P012F, P0181, P0474, P124C, P1247, P20EE, P205B, P2263, P2269, and/or P2459 in the powertrain control module (PCM). This may be due to various strategies within the PCM software. To resolve this condition, update the PCM sof
• SSM 47092 Service bulletin
  2018-02-19 · Engine And Engine Cooling — Exhaust System — Emission Control
• 2018 F-Super Duty/F-650/F-750 and Transit vehicles equipped with 6.7L or 3.2L diesel engines may exhibit a diagnostic trouble code (DTC) P20EE. The 2018 Powertrain Control/Emissions Diagnosis (PC/ED) Manual pinpoint test RD for DTC P20EE does not reflect the most current diagnostic information. Refer to the 2017 PC/ED for F-Super Duty diesel engine vehicles for the latest diagnostic information. M
• 21N06 Service bulletin
  2021-08-31 · Engine And Engine Cooling
• This program extends the warranty coverage of the catalytic converter portion of the selective catalyst reduction (SCR) system for twelve months of service, beginning on the date the powertrain control module (PCM) is reprogrammed under Emissions Recall 21E01. This program only applies if an SCR (converter) fault is detected and it is related to a diagnostic trouble code (DTC) P20EE identified af

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