A320
Aircraft Equipment Problem Critical
Flight Crew Landed As Precaution; Flight Crew Landed in Emergency Condition; Flight Crew Returned To Departure Airport
Aircraft
Climbing out of FL150; we felt a bump followed by erratic engine 1 indications. ECAM showed ENG 1 SYSTEM fault; and ECAM ENG 1 FADEC B fault. We had to bring ENG 1 to idle stabilize the engine. Returned to [departure airport] and made a normal overweight landing.
An A320 Captain reported problems with the #1 engine on climbout; requiring reduced thrust to idle to stabilize engine. The flight returned to departure airport.