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
2Original wording in English
HINO
Reported code forms P2457
This Tech Tip pertains to 2012 NE8J, NJ8J, NV8J Models that have ECU software 89663-E2B40A or 89663-E2B50A. Some engines may erroneously record P2457 DTC in ECU. This fault condition is due to ECU software misdetection…
HINO
Reported code forms P2457
12 - 002 Diagnosis Procedure for P2457. Some engines may erroneously record a P2457 DTC in the ECU. This fault condition is due to ECU software misdetection of EGR cooler efficiency.
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 |
|---|---|---|
| Hino | NE8J | 2012 |
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.