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.
P20DFpressure sensor signal too lowManufacturer communications
8Original wording in English
HINO
Reported code forms P20DF
SB?17?004 Enhanced engine ECU (Electronic Control Unit) software has been made available to address the following conditions: Engine torque reduction has been increased to 70%, from an original 50%, when the engine ECU…
HINO
Reported code forms P20DF
Service Manual Update - Correction of Workshop Manual for HINO300 Series Revision of Troubleshooting Procedure for the DTC P20DF.
HINO
Reported code forms P20DF
SB-16-031 CORRECTION OF WORKSHOP MANUAL FOR HINO300 SERIES Revision of Troubleshooting Procedure for the DTC P20DF
HINO
Reported code forms P20DF
Engine - COE Trucks (155, 155h, 195, or 195h) An enhanced fuel cut valve is available to address a potential sticking coindition that results in excess residual pressure in the dosing injector (7th injector) supply…
HINO
Reported code forms P20DF
SB-16-020 An enhanced fuel cut valve is available to address a potential sticking condition that results in excess residual pressure in the dosing injector (7thinjector) supply pipe. A sticking fuel cut valve may result…
HINO
Reported code forms P20DF
SB-16-019 An enhanced fuel cut valve is available to address a potential sticking condition that results in excess residual pressure in the dosing injector (7thinjector) supply pipe. A sticking fuel cut valve may result…
Check vehicle applicability
25A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Hino | CONVENTIONAL MODELS | 2019 |
| Hino | CONVENTIONAL MODELS | 2018 |
| Hino | CONVENTIONAL MODELS | 2017 |
| Hino | CONVENTIONAL MODELS | 2016 |
| Hino | CONVENTIONAL MODELS | 2015 |
| Hino | CONVENTIONAL MODELS | 2014 |
| Hino | CONVENTIONAL MODELS | 2013 |
| Hino | CONVENTIONAL MODELS | 2012 |
| Hino | CONVENTIONAL MODELS | 2011 |
| Hino | CONVENTIONAL TRUCKS W/JO8 | 2016 |
| Hino | CONVENTIONAL TRUCKS W/JO8 | 2015 |
| Hino | CONVENTIONAL TRUCKS W/JO8 | 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.