I have EXACTLY the same issue on my Master 2,3 DCI 2012 - 150 Hp Fwd
p2425 exhaust gas recirculation cooling valve control circuit open
p2457 exhaust gas recirculation cooler efficiency bellow threshold
p1457 manufacturer specific
Renault Codes :
* DF1012 Cosistent Multiplex Signal for CC/SL, The data supplied to the cruise control or speed limiter are not correct.
* DF1159 EGR WATER PUMP CONTROL CIRCUIT, No Signal.
Could you help me to locate the water pump you have changed ?
Thanks for the help