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P0170 Fuel Trim Malfunction (Bank 1)

11K views 6 replies 5 participants last post by  som28  
#1 ·
Last night my machine produced this code.

Today the car neeeded oiling up as there was bare minimal in.

It struggles past 3-4k rpm and feels there is very little more to give when reaching 60mph.

Can someone convert this code into understandable language :) also what does it mean by bank 1

Thanks.
 
#4 ·
Do you remember what petrol station it was. mines mostly tesco.

Also pulling off from stand still after car been standing say an hour .. gears 1 and 2 get to 3k rpm then stop. after a few mins they can then reach 4.5k but thats it. an not as quick as it should do normally.
 
#5 ·
:slap:mine is exactly the same... apart from now it can reach red line but a week ago it would have a top speed of 10 mph, would'nt go past 3000 revs and when stood still put your foot to the floor and slowly revs would come down to idle with foot still on floor of accelerator pedal.
I spoke to a vauxhall mechanic and he said there was a blockage in exhaust system!

Try loosening bolts on the down pipe to see if there is a release in pressure- if yes blockage from cat backwards
- if no blockage is the manifold/ catalytic converter

I changed the manifold/cat and got all my revs back and speed but car is still behaving naughty.:censor::censor:
 
#6 ·
I had that, maf/02 did the trick