FAP FH500 problem: Stop spending
Soot level at maximum, regeneration impossible 
Particle filter fault on Volvo FH500 Euro 6: summary of the situation
The truck is a 2017 Volvo FH 500, Euro 6 standard. It is equipped with FAP, EGR and Adblue. Several times the differential pressure sensor in the DPF has been changed thinking that it was obscuring the values at the level of the clogging of the DPF. All learning values (RESET) have been done. After a few days the same scenario recurs, critical soot threshold and impossible to carry out the regenerations either at the dealership or manually on the truck.
What are the defects encountered?
2 main defects concerning the particulate filter system are present.
The P10FE00 code: It stipulates a moderately high soot rate. This results in the message “Critical Soot Level in Dash” which means the Diesel Particulate Filter (DPF) has accumulated a moderate level of soot and may be clogged. This affects engine performance and results in reduced power and increased fuel consumption.
In addition, the formerly present fault code P245264 means that there is a fault in the signal sent by the particulate filter pressure sensor. This problem could be caused by a failure of the sensor itself, wiring issues, or a software glitch.
Regenerations become impossible: mandatory change?
The ultimate solution to a recurring particulate filter problem is to remove it. (It is forbidden even if the vehicle still goes through the mines), but it is not legal in itself. There are cases where this can be done legally. (Export, work outside Europe, etc.).
The value of the soot rate increases significantly, i.e. at each instant the rate takes on a higher value than the previous one. At the end of a certain threshold, as in our present case, the value has reached a threshold of no return. Indeed, the value of ‘Soot Accumulation’, accumulation of the soot rate is too high for the user to be able to launch a manual regeneration.
In addition, this too high rate indicates a mandatory change of FAP in the concession. This rate does not allow forced regeneration to the Volvo case. It is therefore imperative either to remove the DPF or to replace it.
Definitive removal of the FAP fault on FH500
The particulate filter can be removed using software programming solutions. The EMS, which contains the elements relating to the soot rate and other fault parameters related to the exhaust gases, stores the fault codes and restricts the vehicle’s ability to operate: What is called degraded mode.
By reprogramming the EMS, we bypass the reporting of fault codes and alerts relating to the treatment of emissions. In addition, engine restriction is inactive after reprogram. Regenerations are blocked and the complete DPF/EGR/SCR system is inhibited. It is not possible to carry out only the DPF deletion on Volvo Euro 6. The adblue, the DPF and the EGR work together and are linked.
It is also imperative to reset the parameters (RESET), in order to reset the soot and ash levels to ZERO.
