P218F
0 owner reports and 61 manufacturer filings across 22 model years from Ford, Nissan, Ram.
Where P218F shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2016 Ram 3500 | Power Train | 10 | — |
| 2019 Ram 3500 | Power Train | 7 | — |
| 2016 Ford F-250 Super Duty | Engine | 3 | — |
| 2016 Ford F-350 Super Duty | Engine | 3 | — |
| 2016 Ford F-450 Super Duty | Engine | 3 | — |
| 2020 Ram 2500 | Exterior Lighting | 3 | — |
| 2019 Ram 2500 | Exterior Lighting | 3 | — |
| 2016 Ram 2500 | Power Train | 3 | — |
| 2020 Ram 3500 | Exterior Lighting | 3 | — |
| 2017 Ram 3500 | Service Brakes, Hydraulic | 3 | — |
| 2016 Nissan Titan XD | Electrical System | 2 | — |
| 2026 Ram 2500 | Electrical System | 2 | — |
| 2025 Ram 2500 | Electrical System | 2 | — |
| 2021 Ram 2500 | Exterior Lighting | 2 | — |
| 2017 Ram 2500 | Fuel System, Gasoline | 2 | — |
| 2026 Ram 3500 | Electrical System | 2 | — |
| 2025 Ram 3500 | Electrical System | 2 | — |
| 2021 Ram 3500 | Exterior Lighting | 2 | — |
| 2017 Nissan Titan | Electrical System | 1 | — |
| 2026 Ram 1500 | Electrical System | 1 | — |
| 2018 Ram 2500 | Fuel System, Gasoline | 1 | — |
| 2018 Ram 3500 | Fuel System, Gasoline | 1 | — |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
What it gets filed under
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P218F. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- 08-286-262026-07-18 · Electrical System
- Flash: DEF Dosing Control Unit (DCU) Software 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): â—� P218F 00 - Reductant No Flow Detected â—� P202E 00 - Reductant Injection Valve Circuit Performance In addition, the following software enhancements are available: â
- 08-285-262026-07-18 · Electrical System
- Flash: DEF Dosing Control Unit (DCU) Software 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): â—� P218F 00 - Reductant No Flow Detected â—� P202E 00 - Reductant Injection Valve Circuit Performance In addition, the following software enhancements are available: â
- S26250000022026-02-26 · Electrical System
- Malfunction Indicator Lamp (MIL) Illuminated, Diagnostic Trouble Codes (DTCs) P208B, P2D1F, P218F, P202E, P2048, P20E8, Setting In The Powertrain Control Module (PCM)
- 18-073-212021-08-13 · Fuel System, Gasoline
- Diesel Injector Freezing This bulletin involves installing a insulator over the Diesel Exhaust Fluid (DEF) injector. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P218F - Reductant No Flow Detected. P202E - (Diesel Exhaust Fluid) Reducta
- S20250000072021-07-15 · Exterior Lighting
- Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P218F ? Reductant No Flow Detected set.
- S20250000072021-07-15 · Exterior Lighting
- Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P218F ? Reductant No Flow Detected set.
What P218F means
Source: SAE J2012 / OBD-IIP218F 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. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P218F
Source: NHTSA files and the OBD-II standardCan I keep driving with P218F stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.