what ecu codes can make the ECU go into limp mode? i had a MOP code (26) and replaced it and got rid of the code, but the ecu is still in limp mode.


i have the current codes: 5 (knock sensor, 42 (turbo pre control), 43 (wastegate control) ...

 

anyone? all i have now is a code 05, and the ecu is still in limp mode!

 

I think the OMP codes can cause your car to go into limp mode. If you've fixed it, you should be able to reset the ECU to get out of it No idea if the knock sensor will keep you in limp mode...

 

A faulty knock sensor will definitely kick in the limp home mode.

 

my ex- girl caused me to go into limp mode...lol!

but on the serious side, my faulty OMP caused it. even after i had that fix i kept getting a code 3? but i changed my ecu and bam! problem fixed.

 

are you sure about that? i've had a bad knock sensor in my car for months and never got limp mode because of it. i always got the code 5 ecu code, but no limp mode.

 

Maybe I'm wrong. Did you fully reset the ecu once you addressed the OMP problem?

 

yes

 

The knock sensor will not put the ecu into "limp" mode, but it does retard the timing to a set point. The only thing that you will noitce is a slight lack power, the car will run fine other wise.

Take a look at the "Service Points" in the FSM

 

Knock sensor code can put the car into limp mode from my experience. That and OMP, for whatever reason those are the only 2.

 

thank you kevin. now i'm wondering why it could be causing limp mode now and it didnt in the past... but hey whatever


i'll replace the knock sensor tomorrow and report back.

 

Fool with the knock sensor connection/wire and see if that helps. However a knock sensor code will not necessarily give you limp mode but a disconnected or bad wire will which is usually what fails on the sensor anyway.

Oh and if you need good knock sensor let me know

 

how much do you want for a good knock sensor, fritz?

 

I have some as well if you need them.

 

20 bucks shipped for on old FRIEND??

 

sounds good to me.

 

cool i'll paypal ya when i get home from christmas

 

hoe did you get on fella?

 

i got a new MOP from a buddy for free.

as for the "limp mode" it wasnt limp mode -i had the leading CAS wires backwards so the ecu was getting the wrong ignition signal (making a rev limiter around 3200) so i swapped the wires and it has been running perfectly.

but yes, a bad MOP will cause the standard limp mode.