What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P219Bair-fuel ratio variation of cylinder [bank 2, front bank]P219BBank 2 Air-fuel Ratio ImbalanceP219BBank 2 Air-Fuel Ratio ImbalanceP219BBank 2 Air-Fuel Ratio ImbalanceView all · Manufacturer wording →
Manufacturer communications
42Original wording in English
RAM
Reported code forms P219B
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle exhibit/set SYMPTOM: one or more of the following Diagnostic Trouble Codes (DTCs):…
RAM
Reported code forms P219B
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ●…
RAM
Reported code forms P219B
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle exhibit/set **one or more of the following Diagnostic Trouble Codes (DTCs)**: ●…
RAM
Reported code forms P219B
Technical Service Bulletin (TSB) Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle exhibit/set **one or more of the following…
FORD, LINCOLN
Reported code forms P219B
Some 2023-2025 Explorer/Aviator vehicles equipped with the 3.0L EcoBoost engine and up to 15,000 miles (24,140 km) may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P219A…
FORD, LINCOLN
Reported code forms P219B
Some 2023-2025 Explorer/Aviator vehicles equipped with the 3.0L EcoBoost engine and up to 15,000 miles (24,140 km) may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P219A…
Check vehicle applicability
184A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Buick | LACROSSE | 2019 |
| Buick | LACROSSE | 2018 |
| Buick | LACROSSE | 2017 |
| Buick | REGAL | 2020 |
| Buick | REGAL | 2019 |
| Buick | REGAL | 2018 |
| Cadillac | ATS | 2019 |
| Cadillac | ATS | 2018 |
| Cadillac | ATS | 2017 |
| Cadillac | ATS | 2016 |
| Cadillac | CT5 | 2021 |
| Cadillac | CT5 | 2020 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.