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
1Original wording in English
MACK
Reported code forms P2604
Mack Chassis - Diagnostic Trouble Codes (DTC) P2604 , P2606 - Intake Heater / Preheater / Preheat "A" Circuit Range / Performance - US10+OBD13, US14+OBD13 To US14+OBD16, Model Years 2014 To 2017
Check vehicle applicability
28A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Mack | CHU | 2017 |
| Mack | CHU | 2016 |
| Mack | CHU | 2015 |
| Mack | CHU | 2014 |
| Mack | CXU | 2017 |
| Mack | CXU | 2016 |
| Mack | CXU | 2015 |
| Mack | CXU | 2014 |
| Mack | GU | 2017 |
| Mack | GU | 2016 |
| Mack | GU | 2015 |
| Mack | GU | 2014 |
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.