What does code P204F mean?
When a code P204F is stored, it means that the powertrain control module (PCM) has detected a malfunction in the reductant portion of the selective catalyst reduction (SCR) system. Bank 1 denotes the bank of the engine that contains the number one cylinder.
What is reductant system?
Your vehicle has a selective catalytic reductant system. This reduces exhaust emission levels by injecting AdBlue® into the exhaust system. The engine does not start if you tamper with or disable the selective catalytic reductant system. For the system to correctly operate, you must maintain the fluid level.
What is a reductant pressure sensor?
The reductant pressure sensor provides the module with a voltage signal proportional to the reductant pressure generated by the pump. The module varies the duty cycle of the pump voltage to maintain pressure within a calibrated range.
What is reductant pressure?
OBD II fault code P20E8 is a generic trouble code that is defined as “Reductant Pressure Too Low” and is set when the PCM (Powertrain Control Module) detects an insufficient pressure in the reductant injection system between the injection pump and the injection nozzle on SCR catalytic converters.
Where is the reductant pressure sensor located?
The electrically operated DEF (emissions reductant) pump, which is located within the DEF reservoir, is designed to deliver pressurized reductant to the reductant injector located upstream of the Selective Catalytic Reduction Catalyst.
How do you fix reductant pressure too low?
How To Correct Reductant Pressure Too Low Issue
- You must fix the defective reductant pump.
- Make sure to mend the faulty reductant injector.
- It is essential to restore the flawed reductant purge valve.
- Repair or replace the quirky reductant pressure line.
- Rehabilitate the defaults in the reductant pressure sensor.
What happens if you pee in DEF tank?
Because of the other compounds found in urine, peeing in a DEF tank could ruin the filters and the whole SCR system if used too often. The systems also won’t be able to do their job of neutralizing carbon emissions from the diesel exhaust.
Why is there a DEF shortage?
Skyrocketing natural gas prices in the EU have driven up manufacturing costs, significantly increasing the cost of DEF. Chinese and Russian Restrictions – China, a key supplier of urea, has restricted exports to curb domestic shortages.
Is there a DEF shortage?
Severe shortages of DEF due to reduced production in China have been reported in South Korea, causing mounting concerns in the transportation and logistics sectors.