Astra 2006 Z17DH Diesel battery going dead please help.

[super jumbe]

Vauxhall Astra 2006 Z17DTH Diesel
Customer came this afternoon after replacing new battery, told me that battery going dead as soon as I replaced with new one.
Car starts fine with jump Leeds, I have scanned with op-com, please tell me what the fault is.

Total number of fault codes: 4

P0621 - Generator Lamp "L" Control Circuit Malfunction
(02) - Present

P0070 - Ambient Air Temperature Sensor Error
(71) - Not present

P1604 - Replace Electronic Control Unit (ECU)
(32) - Not present

P0606 - Electronic Control Unit (ECU) - Malfunction
(03) - Not present

Thanks in advance.

[fes_786]

P0621 - Generator Lamp "L" Control Circuit Malfunction
(02) - Present


check the alternator control circuit and see if its giving enough juice

[synkrotronic]

Possible generator damage voltage must be around 14 V ( measure on battery and generator positive cable).Steering well engine is allways working and is a big help to make battery down.

[super jumbe]

Thanks pal it was the alternator.