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 communications
3Original wording in English
MACK
Reported code forms P103B00
CBR: Mack DEF Dosing Valve Diagnostic Trouble Codes (DTC) P202D00, P208E00, P103B00 - US10+OBD13 And Newer Emissions
MACK
Reported code forms P103B
Mack Chassis - Diagnostic Trouble Codes ( DTC ) P208E And P103B Logging With Possible Derate ( SCR Inducement ) - US14+OBD13, US14+OBD15, US14+OBD16 And US17+OBD16 And Newer Emissions, Common Year Models 2015 And Newer
MACK
Reported code forms P103B
Mack Chassis - Diagnostic Trouble Codes ( DTC ) P208E And P103B Logging With Possible Derate ( SCR Inducement ) - US14+OBD13, US14+OBD15, US14+OBD16 Emissions And Newer
Check vehicle applicability
1A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Mack | CHU | 2015 |
Historical records · 4 · 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.