I just received my Chinese code reader today and it's awesome. For $66 I will now be checking things quite often. Well one of the codes that won't reset are b1102 and b1103 which says "control line IR signal from left front door IR. The other code is from the right door. So I assume there are lost signals but can someone give me a clue on how to trouble shoot this? The module is fbs/rfp's. The original stereo unit has been replaced with an after market one if that makes any difference. Thanks.