I recently swapped to an obd1 h22a and it looks as if the ecu that I received with the motor is bad. I am getting code 41, have tried replacing o2 sensors, have verified that wiring is fine and it wasn't showing any cel codes before the swap. I have a p13 ecu from an automatic h22a that I am considering trying to use to test and see if the code shows up using that ecu. Is this a big deal if I don't drive it, but just start it to see if it still throws a cel 41 on a known good ecu, but for an automatic transmission? The car is manual transmission and I want to make sure that I am not going to cause other problems by plugging in the automatic ecu.