Reference meaning
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.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
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.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P203E-00Reductant Level Sensor 1 Circuit Intermittent-Erratic
P203EReductant Level Sensor 1 Circuit Intermittent
P203E-00Reductant Level Sensor 1 Circuit Intermittent-Erratic
Manufacturer communications
18Original wording in English
RAM
"Diesel Exhaust Fluid (DEF) Fluid Freezing Warranty Extension XR1 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P203E-00 - Reductant Level Sensor 1 Circuit Intermittent-Erratic. Customers may also experience one or more of…
RAM
"Diesel Exhaust Fluid (DEF) Fluid Freezing Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P203E-00 - Reductant Level Sensor 1 Circuit Intermittent-Erratic. Customers may also experience one or more of the following: ● Repea…
RAM
"Diesel Exhaust Fluid (DEF) Fluid Freezing Warranty Extension XR1 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P203E-00 - Reductant Level Sensor 1 Circuit Intermittent-Erratic. Customers may also experience one or more of…
RAM
"Diesel Exhaust Fluid (DEF) Fluid Freezing **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC):** ● P203E-00 - Reductant Level Sensor 1 Circuit Intermittent-Erratic. Customers may also experience one or more of the following: ● R…
Check vehicle applicability
61A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Chrysler | 300 ↗ | 2022 |
| Chrysler | 300 ↗ | 2021 |
| Chrysler | 300 ↗ | 2014 |
| Dodge | CHALLENGER ↗ | 2022 |
| Dodge | CHALLENGER ↗ | 2021 |
| Dodge | CHALLENGER ↗ | 2020 |
| Dodge | CHARGER ↗ | 2022 |
| Dodge | CHARGER ↗ | 2021 |
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.