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.
P20E9Reductant Pressure Too HighP20E9-00Reductant Pressure Too HighP20E9-00Reductant Pressure Too HighP20E9Reductant Pressure Too HighView all · Manufacturer wording →
Manufacturer communications
27Original wording in English
AUDI
Reported code forms P20E900
This bulletin contains repair instructions for when a MIL is on and DTC P20E900 or P20FE00 is stored in the ECM.
AUDI
Reported code forms P20E900
This bulletin contains repair instructions for when a MIL is on and DTC P20E900 or P20FE00 is stored in the ECM.
AUDI
Reported code forms P20E900
This bulletin contains repair instructions for when a MIL is on and DTC P20E900 or P20FE00 is stored in the ECM.
JEEP
Reported code forms P20E9
Flash: 3.0L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming Powertrain Control Module (PCM) with latest available software. It also involves cleaning or replacement of Exhaust Gas…
JEEP
Reported code forms P20E9-00
Flash: 3.0L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a…
JEEP
Reported code forms P20E9-00
Flash: 3.0L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a…
Check vehicle applicability
121A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | Q7 | 2015 |
| Audi | Q7 | 2014 |
| Audi | Q7 | 2013 |
| Audi | Q7 | 2012 |
| Hino | 155 | 2016 |
| Hino | 195 | 2013 |
| Hino | 195H | 2016 |
| Hino | 195H | 2015 |
| Hino | 195H | 2014 |
| Hino | 195H | 2013 |
| Hino | 238 | 2016 |
| Hino | 238 | 2015 |
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.