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.
P1C54-00SCR NOx Catalyst MissingP1C54SCR NOx Catalyst MissingP1C54-00SCR NOX Catalyst MissingManufacturer communications
35Original wording in English
RAM
Reported code forms P1C54-00
Flash: Powertrain Control Module (PCM) Updates V2C 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):…
RAM
Reported code forms P1C54-00
Flash: Powertrain Control Module (PCM) Updates V2C 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):…
RAM
Reported code forms P1C54 - 00
Flash: Powertrain Control Module (PCM) Updates Customers must 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 P1C54 - 00
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):**…
RAM
Reported code forms P1C54-00
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 P1C54-00
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): ●…
Check vehicle applicability
16A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ram | 2500 | 2020 |
| Ram | 2500 | 2019 |
| Ram | 2500 | 2018 |
| Ram | 2500 | 2016 |
| Ram | 3500 | 2025 |
| Ram | 3500 | 2020 |
| Ram | 3500 | 2019 |
| Ram | 3500 | 2018 |
| Ram | 3500 | 2016 |
| Ram | 4500 | 2025 |
| Ram | 4500 | 2020 |
| Ram | 4500 | 2018 |
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.