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Hi,
My car is a 308 SW 1.6 120HP year 2015. 108k miles.
I bought it in 2018, with 62k mi:les. I don't know if previous owner filled Fuel Additive.
From 62k miles to 108k miles, I didn't refill Fuel Additive (I didn't even know I had to)
I also have a P15B3 DTC when performing a diagnosis on 'Car Scanner' App.I'm surprised I don't have a clear message (low level) on my dashboard.
messages I have are:
1. flashing Urea. (Although my UREA tanks is full)
2. Car will not tart in 550 miles.
3. Orange engine symbol
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P15B3(00) [0x15B300] / Statut: Test échoué, Test échoué dans le cycle courant de conduite, Temporaire, Confirmé, Test échoué depuis le dernier effacement des DTC
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and a
P1446(21) [0x144621] / Evaporative Vac Solenoid Circuit Malfunction / Evaporative vac solenoid circuit malfunction / EDC15C2-(607) Additive level. / EDC15C2-(307/406) Additive quantity. Additive minimum level wait.
Statut: Test échoué, Test échoué dans le cycle courant de conduite, Temporaire, Confirmé, Test échoué depuis le dernier effacement des DTC
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From my understanding (hours on google), there is NO level sensor in the EOLYS tank. instead, the level is calculated by the ECU. The assumed level is based on volume of EOLYS put initially in the tank, the number of time the fuel tank has been filled, and the amount of fuel put at each refill.
So If I fill up my Fuel addtive tank + erase the DTC on my 'car Scanner' App + put few liters of Fuel at the pump station, I assume I'll still have the error message, Correct? As to get rid of the error message, I need to tell the ECU that my Fuel additive is full, and this something I can't do without going to a garage that can access core functions in my ECU and reset it.
Can the update of the ECU only be done with the Diagbox software?
Regarding the P1446 DTC. Is the decision of dosing some fuel additive where refilling fuel tanks is linked to Evaporative Vac Solenoid Circuit? If yes, where is located this EVAP device? My undertanding is that this EVAP is linked to the Fuel tank and not to the Fuel additive tank (EOLYS).
Sorry for the long message, but there are so many devices involved in the fuel management, I couldn't make it simple.
Regards
Jean-Guy
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