C0020 on Ford vehicles
C0020 is named on 9 Ford model years (2020–2022): 48 manufacturer filings and 0 owner reports in NHTSA’s files, across F-250 Super Duty, F-350 Super Duty, F-450 Super Duty.
Which Ford model years name C0020
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2021 Ford F-250 Super Duty | Electrical System | 6 | — |
| 2021 Ford F-350 Super Duty | Electrical System | 6 | — |
| 2020 Ford F-250 Super Duty | Electrical System | 6 | — |
| 2020 Ford F-350 Super Duty | Electrical System | 6 | — |
| 2022 Ford F-250 Super Duty | Electrical System | 5 | — |
| 2022 Ford F-350 Super Duty | Electrical System | 5 | — |
| 2021 Ford F-450 Super Duty | Electrical System | 5 | — |
| 2020 Ford F-450 Super Duty | Electrical System | 5 | — |
| 2022 Ford F-450 Super Duty | Electrical System | 4 | — |
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.
Ford filings that name C0020
Source: NHTSA manufacturer communicationsBulletins and campaigns Ford filed with NHTSA whose summary names C0020. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- TSB 21-2176 Service bulletin2021-08-16 · Electrical System
- Some 2020-2021 F-Super Duty vehicles may exhibit a condition where the engine will not turn off and/or have various electrical symptoms including a dead battery, horn stays on and no crank/no start. The vehicle may also have an illuminated anti-lock braking system (ABS) Indicator with DTCs C0020 and U3003 in the ABS module. This may be a result of water/moisture intrusion into the battery junction
- TSB 22-2004 Service bulletin2022-01-12 · Electrical System
- Some 2020-2022 F-Super Duty vehicles may exhibit a condition where the engine will not turn off and/or have various electrical symptoms including a dead battery, horn stays on and no crank/no start. The vehicle may also have an illuminated anti-lock braking system (ABS) Indicator with DTCs C0020 and U3003 in the ABS module. This may be a result of water/moisture intrusion into the battery junction
- TSB 22-2044 Service bulletin2022-02-16 · Electrical System
- Some 2020-2022 F-Super Duty vehicles may exhibit a condition where the engine will not turn off and/or have various electrical symptoms including a dead battery, horn stays on and no crank/no start. The vehicle may also have an illuminated anti-lock braking system (ABS) indicator with diagnostic trouble codes (DTCs) C0020 and U3003 in the ABS module. The vehicle may not shift out of park (P) and/o
- TSB 22-2313 Service bulletin2022-08-05 · Electrical System
- This article supersedes TSB 22-2044 to update the Parts List. Some 2020-2022 F-Super Duty vehicles built on or before 18-Mar-2022 may exhibit a condition where the engine will not turn off and/or have various electrical symptoms including a dead battery, horn stays on and no crank/no start. The vehicle may also have an illuminated anti-lock braking system (ABS) indicator with diagnostic trouble co
- TSB 22-2443 Service bulletin2022-11-18 · Unknown Or Other
- This article supersedes TSB 22-2313 to update the Parts List, Service Procedure, and vehicle production fix dates. Some 2020-2022 F-Super Duty vehicles may exhibit a condition where the engine will not turn off and/or have various electrical symptoms including a dead battery, horn stays on and no crank/no start. The vehicle may also have an illuminated anti-lock braking system (ABS) indicator with
What C0020 means
Source: SAE J2012 / OBD-IIC0020 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
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.
Common questions
Source: NHTSA files and the OBD-II standardIs C0020 a known problem on Ford vehicles?
It is a documented one: NHTSA's files hold 48 manufacturer filings and 0 owner reports naming C0020 on 9 Ford model years (2020–2022). 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 Ford models does C0020 appear on most?
2021 F-250 Super Duty (6 documents), 2020 F-250 Super Duty (6 documents), 2021 F-350 Super Duty (6 documents).
Does C0020 on a Ford 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.