ECU SHOWING CODE 21

CODE 21 I BELIEVE TOBE THE PTU SO IVE REPLACED IT AND IVE STILL GOT PROBS WITH NOT STARTING BUT FIREING SOME TIMES WILL START BUT THEN STARTS TO MISS AND THEN DIES.

WHEN I FITTED THE NEW PTU IT SEEMED TOBE RUNNING ON FIVE SO SWAPPED COILS AND NEW PLUGS,ALL CONNECTORS CLEANED

PLEASE HELP !!!!!!!!!!!! SOMEONE.

1990 TT H REG JAP IMPORT .

Kev is it a known good ptu ?

 

If not you may have been unlucky enough to have replaced a duff one with a duff one.

 

Robin

WELL I GOT NEW FROM NISSAN.

IVE RECHECKED AND RECHECKED ALL CONNECTIONS BUT STILL ECU SHOWING CODE 21 AND NOW ALSO SHOWING CODE 13 ASWELL.

Code 21 will be there from when you have been testing and messing, especially if you remove the cas and turn it it to test the cas is functioning ok, this always gives a code 21 will need clearing.

 

The problem sounds ptu AND connection related, after giving it all to sort a problem like this you often end up going round in circles curing problems and also causing them elsehwere at the same time.

 

A fresh start is required, take it logically and do the spark, fuel and cas unit tests ignore the codes for now , in fact disconnect the ecu or battery overnight before you start to clear it, also try not to disturb connections and wiring loom too much, chances are you will track it down this way to more than one thing which is why it is alluding you at the moment.

 

Hope that helps

 

 

Jeff TT

CHEERS JEFF

LOOKS LIKE ITS GOING TO BE A LONG DAY TOMORROW (AGAIN).

 

KEV