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.
P203D(Diesel Exhaust Fluid) Reductant Level Sensor Circuit HighManufacturer communications
6Original wording in English
JAGUAR
Reported code forms P203D
Issue: The customer is unable to start their vehicle or a warning message displayed on the Instrument Cluster "Re-start will not be possible in xxxx miles". Any of the following DTC's may have been triggered: P203B,…
RAM
Reported code forms P203D
Diesel Exhaust Fluid (DEF) Level Sensor Manufacturing Defect This bulletin involves replacing the DEF pump module. A manufacturing defect in the level sensor may have occurred, if the level sensor was built within the…
RAM
Reported code forms P203D
Diesel Exhaust Fluid (DEF) Level Gauge Inaccurate Or Stuck This bulletin involves verifying the correct DEF level in the tank and if necessary, replacing the DEF pump module. A small number of customers may comment that…
RAM
Reported code forms P203D
Diesel Exhaust Fluid (DEF) Level Gauge Inaccurate Or Stuck This bulletin involves verifying the correct DEF level in the tank and if necessary, replacing the DEF pump module. A small number of customers may comment that…
CHEVROLET, GMC
Reported code forms P203D
This Preliminary Information communication provides information to the technician about vehicles that have a "Service Exhaust Fluid System" and a "See Owner's Manual Now" message displayed on the Instrument Panel…
CHEVROLET, GMC
Reported code forms P203D
This Preliminary Information communication provides information to the technician about vehicles that have a ?Service Exhaust Fluid System? and a ?See Owner?s Manual Now? message displayed on the Instrument Panel…
Check vehicle applicability
32A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Chevrolet | EXPRESS | 2011 |
| Chevrolet | EXPRESS | 2010 |
| Chevrolet | SILVERADO | 2011 |
| Chevrolet | SILVERADO | 2010 |
| Chevrolet | SILVERADO 1500 | 2011 |
| Chevrolet | SILVERADO 1500 | 2010 |
| Chevrolet | SILVERADO 2500 | 2011 |
| Chevrolet | SILVERADO 2500 | 2010 |
| GMC | SAVANA | 2011 |
| GMC | SAVANA | 2010 |
| GMC | SIERRA | 2011 |
| GMC | SIERRA | 2010 |
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.