>>>> Codes logged are P1664 Fule inj pump malfunction, P1564 Inj pump requesting reduced fuleing. These caodes are logged in, engine ECU, inj ECU and pump <<<<<<
These codes are Logged in the Engine Ecu, If you want to read the faullts that are logged in the Pump ecu, Then you have to plug Directly into the pump ecu.
The pump Ecu is the box on top of the pump with the multiplug on it with the slidelock connector.
I Dont know of any other tool that can read the Pump ecu apart from the Bosch KTS, and I think this gives 2 or 3 digit fault codes.
I would be fitting a genuine Filter and housing before condemning this pump as any air or blockages in this system will play havoc with the pump.
H.T.H. Tony.
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