Had a 2012 galaxy 1.6T come to me as it broke down and diagnosed the high pressure fuel pump. This has now been replaced but still got the same issues.

 

Supposedly the car has had new injectors, plugs, in tank pump, fuel pressure sensor and now a HPFP.

 

I'm still getting codes which I've done some research and someone has said fuel pump control module are prone on these ecoboosts. Is that my next bet or go through and check the work that has supposedly already been done.

 

Codes:

 

P0089 - fuel pressure regulator A

 

P0300 - random multiple cylinder misfire 

 

P0302 - cylinder 2 misfire 

 

P0303 - cylinder 3 misfire 

 

P053F - cold start fuel pressure perf

ormance bank 1.

 

Do not assume anything and check everything again yourself.

The fuel metering control that is integrated into the high pressure fuel pump is directly controlled by the PCM. The combination of these DTC codes indicate that the PCM is not able to achieve the desired fuel pressure.

The fuel pump control module controls the low pressure fuel pump inside the fuel tank. If the low pressure fuel pump is running the control module will not be the cause of the problem.


In this case I would start with the following:

- Check the cam lobe and tappet that are actuating the high pressure fuel pump for wear. It is not uncommon for the cam lobe and tappet to wear which results in reduced fuel pressure.
- Check the wiring and connectors between the PCM and fuel metering control valve for damage.
- Measure the actual fuel pressure.