I have a jdm b16 in a 89 hatch thats obd1. Its throughing codes 12 and 41 with a jdm p30 b16 ecu and codes 20, 22, and 41 with a usdm p72 gsr ecu. please help me. im going to take care of the code 41 with a new o2. Someone help me with the other codes. the vtec oil pressure swith is hooked up and it will crack vtec so i dont know why its thoughing that code. please help me out. BTW Both ecu's are stock. thank

 

hey i have cleared the code 41. so the b16 p30 is still throughing code 12. That is for the egr lift sensor. No b16 ever came with a egr. The jumper harness doesn't have a wire to the pin for that sensor so i dont know why its throughing this code. please help me i have to get the cel gone so i can get it inspected. thanks