P1600 Peugeot ECM Battery Back-up Circuit Fault P1600 Peugeot ECM Battery Back-up Circuit Fault Peugeot Vehicle:Peugeot 107,Peugeot 208,Peugeot 408,Peugeot 508,Peugeot RCZ,Peugeot 4007,Peugeot Expert Tepee