P051B on Ford vehicles
P051B is named on 5 Ford model years (2017–2023): 14 manufacturer filings and 5 owner reports in NHTSA’s files, across Escape, EcoSport, Bronco.
Which Ford model years name P051B
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2017 Ford Escape | Engine | 5 | 3 |
| 2018 Ford Escape | Electrical System | 5 | — |
| 2018 Ford EcoSport | Engine | 1 | 2 |
| 2023 Ford Bronco | Engine | 2 | — |
| 2019 Ford EcoSport | Engine | 1 | — |
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.
What Ford owners said
Source: NHTSA complaint databaseOwners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.
The engine codes scanned via the OBDII port directly after are as follows: P051B, P0299, P0340, P0344, P0365 and P0369
Ford filings that name P051B
Source: NHTSA manufacturer communicationsBulletins and campaigns Ford filed with NHTSA whose summary names P051B. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 17-2236 Service bulletin2017-11-14 · Engine
- Some 2017 Escape vehicles equipped with a 1.5L Gasoline Turbocharged Direct Injection (GTDI) engine and built on or before 1-Feb-2017 may exhibit an illuminated MIL with DTC P051B. Follow the Service Procedure steps to correct the condition.
- tsb18-2210 Service bulletin2018-07-17 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
- Some 2017-2018 Escape vehicles equipped with a 1.5L EcoBoost engine and built on or before 1Jun2018 may exhibit an illuminated MIL with diagnostic trouble code (DTC) P051B stored in the powertrain control module (PCM). Follow the Service Procedure steps to correct the condition.
- TSB 18-2246 Service bulletin2018-08-17 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
- Some 2017-2018 Escape vehicles with a 1.5L Ecoboost engine and built on 2-Feb-2017 and through 3-Aug-2018 may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P04DB and/or P051B stored in the powertrain control module (PCM). Follow the Service Procedure steps to correct the condition.
- SSM 47158 Service bulletin2018-03-15 · Engine And Engine Cooling — Cooling System — Hoses/Lines/Piping/Fittings
- Some 2018 Escape vehicles equipped with a 1.5L EcoBoost engine may exhibit an illuminated MIL on with DTC P051B. This DTC sets when the PCM detects a sensor offset greater than a calibrated threshold just prior to engine cranking or if it detects crankcase pressure outside of the calibrated limit during low engine air flows. If DTC P051B is set with any other codes, diagnose and repair those DTCs
- SSM 47203 Service bulletin2018-03-30 · Fuel System, Gasoline
- Some 2018 Escape vehicles equipped with a 1.5L EcoBoost engine may exhibit an illuminated MIL on with DTC P051B. This DTC sets if the crankcase pressure sensor voltage is greater than a calibrated threshold. If DTC P051B is set with any other codes, diagnose and repair those DTCs first. If DTC P051B is the only DTC, use the Integrated Diagnostic System (IDS) datalogger and monitor CRNKCAS_P_V at K
- TSB19-2164 Service bulletin2019-05-24 · Engine And Engine Cooling — Exhaust System — Emission Control — Crankcase (Pcv)
- Some 2018-2019 EcoSport vehicles equipped with a 1.0L EcoBoost engine build on or before 16-May-2019 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P051B. This may be due to sensor drift on the crankcase ventilation sensor thresholds. To resolve the condition, follow the Service Procedure to reprogram the powertrain control module (PCM).
- TSB 23-2185 Service bulletin2023-06-20 · Engine And Engine Cooling
- Some 2023 Bronco vehicles built on or before 12-Jun-2023 equipped with a 2.7L engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P051B stored in the powertrain control module (PCM). This may be due to the software in the PCM. To correct the condition, follow the Service Procedure to reprogram the PCM.
- SSM 51706 Service bulletin2023-06-13 · Engine And Engine Cooling
- Some 2023 Bronco vehicles equipped with a 2.7L engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P051B stored in the powertrain control module (PCM). PCM software is currently under development to resolve this condition and is scheduled to be available by 30-Jun-2023. Monitor OASIS for updates and schedule a follow up with the customer when the s
What P051B means
Source: SAE J2012 / OBD-IIP051B 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 P051B a known problem on Ford vehicles?
It is a documented one: NHTSA's files hold 14 manufacturer filings and 5 owner reports naming P051B on 5 Ford model years (2017–2023). 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 P051B appear on most?
2017 Escape (8 documents), 2018 Escape (5 documents), 2018 EcoSport (3 documents).
Does P051B 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.