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.
P04B5Fuel Fill Door Stuck OpenManufacturer communications
8Original wording in English
JEEP
Reported code forms P04B5
Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mustexhibit/set one or more of the…
JEEP
Reported code forms P04B5
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ●…
JEEP
Reported code forms P04B5
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mustexhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ●…
JEEP
Reported code forms P04B5
Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the…
FORD
Reported code forms P04B5
Some 2021 F-150 PowerBoost vehicles may exhibit the fuel door release tappet separated from the fuel door housing, slow fuel fill, fuel spit back during refueling, a message in the cluster that states Close Fuel Door To…
FORD, LINCOLN
Reported code forms P04B5
Some 2013-2018 C-MAX, 2013-2019 Fusion Energi, and 2017-2019 Fusion/MKZ Hybrid vehicles may exhibit an illuminated MIL with diagnostic trouble code (DTC) P04B5. This may be due to inadvertent actuation of the fuel door…
Check vehicle applicability
24A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | C-MAX | 2018 |
| Ford | C-MAX | 2017 |
| Ford | C-MAX | 2016 |
| Ford | C-MAX | 2015 |
| Ford | C-MAX | 2014 |
| Ford | C-MAX | 2013 |
| Ford | F-150 | 2021 |
| Ford | FUSION | 2017 |
| Ford | FUSION | 2016 |
| Ford | FUSION | 2015 |
| Ford | FUSION | 2014 |
| Ford | FUSION | 2013 |
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.