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.
P249C-00Excessive Time To Enter Closed Loop Reductant Injection ControlP249C-00Excessive Time To Enter Closed Loop Reductant Injection Timing ControlP249C-00Excessive Time To Enter Closed Loop Reductant Injection Timing ControlP249C-00Excessive Time To Enter Closed Loop Reductant Injection ControlView all · Manufacturer wording →
Manufacturer communications
65Original wording in English
JEEP
Reported code forms P249C-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):…
CADILLAC, CHEVROLET, GMC
Reported code forms P249C
This service bulletin provides a repair procedure to correct customer concerns of Service Emissions System Displayed on DIC, MIL Illuminated with DTC P249C and/or P20E8 Set.
CADILLAC, CHEVROLET, GMC
Reported code forms P249C
This service bulletin provides a repair procedure to correct customer concerns of Service Emissions System Displayed on DIC, MIL Illuminated with DTC P249C and/or P20E8 Set.
RAM
Reported code forms P249C-00
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic…
JEEP
Reported code forms P249C-00
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic…
JEEP
Reported code forms P249C-00
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further…
Check vehicle applicability
262A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | A3 CABRIOLET | 2015 |
| Cadillac | ESCALADE | 2024 |
| Cadillac | ESCALADE | 2023 |
| Cadillac | ESCALADE | 2022 |
| Cadillac | ESCALADE | 2021 |
| Cadillac | ESCALADE ESV | 2023 |
| Cadillac | ESCALADE ESV | 2022 |
| Cadillac | ESCALADE ESV | 2021 |
| Cadillac | ESCALADE NA | 2021 |
| Chevrolet | SILVERADO 1500 | 2024 |
| Chevrolet | SILVERADO 1500 | 2023 |
| Chevrolet | SILVERADO 1500 | 2022 |
Historical records · 8 · Historical vehicle association; OBD-II compatibility is not established by this record.
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.