PFC ecu - engine check light

**BlitZ** · 02-07-2007 12:40 PM

My engine check light seems to flash twice every now and then (about once a week or 2 weeks). It happens with the PFC and at random throttle positions.

What could this mean?

**kerim** · 02-07-2007 12:44 PM

ey man, this use to happen to my ek4, take the plug off the air box, not sure wat its called, and plug it back in after a few seconds, it didnt come up at all after that, give it a try, also make sure all the plugs are in properly too

**BlitZ** · 02-07-2007 03:01 PM

02 sensor on the piping??

**kerim** · 02-07-2007 03:02 PM

yeah i think it was that, let me know how you go

**BlitZ** · 02-07-2007 04:58 PM

Originally Posted by kerim

yeah i think it was that, let me know how you go

nah dont think it works.. This is becuase I see the flashing light before.. got a new intake and its still there..

happens only rarely though

**tinkerbell** · 02-07-2007 06:18 PM

it is either knock, airflow MAX or injector MAX...

my bet would be knock...

it is supposed to flashe 3 times though

**locote** · 02-07-2007 06:38 PM

My flashes 2 times real quik for Knock when it goes over 60 in the meter..
It also lights up and stays lit when it revs over 8k floored...
Been doing this for a long time ( not the knocking)
Rev limiter doesnt kik in also...
I just let it be

**Perry** · 02-07-2007 07:34 PM

its the knock senor or what ever u call it Blitz

**BlitZ** · 03-07-2007 11:14 PM

Originally Posted by tinkerbell

it is either knock, airflow MAX or injector MAX...

my bet would be knock...

it is supposed to flashe 3 times though

thanks tink...

did some more research on the topics mentioned..

Why does my engine light flash when I drive with the PowerFC?

The PowerFC uses the factory engine warning light to alert the user of "upper limit" or ceiling values in the engine systems. Things such as airflow meter max value, injector max duty, excessive knock will cause the engine warning to flash. Usually the engine flash is in a sequence of 3 flashes each 0.5 seconds apart. Should you experience this you should review the hand controller max values (press down when in monitor mode and displaying values to see the max values for each) and consult your tuner immediately. Excessively high knock can cause engine damage. Running on max injector duty can also be fatal so speak to your tuner. Aggressive tunes that are tuned around winter temps/airflow and being run hard in summer may cause these symptoms if the tune is very aggressive and on border line of maxing out the stock components. This is only hearsay but I have seen this from at least one or two members.