A170 Cdi fault code P1470

[daddyscoob]

Further to the lack of power and not willing to rev over 3 k I have cleaned the egr valve, replaced a turbo pipe and changed the maf sensor.

The problem is still there and having scanned the ecu I have the code P1470 charge pressure control.

Can anyone help please !!!!!


HELP !!!!!!!!!

 

[Steve@Avantgarde]

too high or too low...??

You have looked into the wrong areas from the start, this relates to turbo boost pressure. Have you had it on a STAR machine?

 

[daddyscoob]

Hi Steve,
It doesn't say high or low. It's an Àutoboss scanner. Would you have any idea of what could be wrong .

 

[Steve@Avantgarde]

Not without putting it on STAR.

Charge pressure too high and its something like a blocked KAT and the engine cant breathe properly and too low means there is a leak on the charge pressure system from say a pipe or the intercooler.

Either way STAR will be more definitive with its fault codes and there is lots of values you can check on live data along with turbo and charge pressure tests. A lot of the time its about having the right tools and knowledge to diagnose faults accurately.

Making a stab at cleaning and replacing various components just makes it a longer and more expensive process.