Good morning, I have a problem with a 2016 opel corsa 1400 ecotech gpl engine code b14xel, when idling for a few minutes on the dashboard it sends the message perform service and switches to petrol.if it is in gear it doesn't give any problems, you can even drive 30 km.if you turn the car off for a few minutes and restart it's ok again, but when you restart it does the same. Replaced gas filter and restored fuel adaptation values, the car has 102000 km, the error codes are: P0171 mixture adaptation and P11E9 alternative fuel correction system.Should I try 4 gas injectors?