Constant Check light Unable to read codes

Hi all

My Engine check light is on and im unable to get flash codes and tried to aftermarket scan tools with no luck..... Could I be locking at a faulty ecu? It Runs Fine and not in limp mode any help would b great. Ohh I might add the my oil pressure switch has been playing up don't know if this has any thing to do with the above fault

Thank Ryan

What vehicle and engine do you have?

If it's a diesel have you tried replacing the fuel filter? or at least drain it and check for water in the fuel.

Highly doubt it's a faulty ECU.

Yendor u legend! Y does Nissan not have a water light lol. Cheers Mate

Quote:

---

Originally Posted by Nvd323

Yendor u legend! Cheers Mate

---

Yes he is!!!