2007 R56 99k miles...Yellowhead & DIS diag test gives me the following when running DME test. DME-28AA DME Bypass blow- off valve plausibility- signal implausible - fault currently not present. Recirculating-Air valve B1214_M_LDR_H. The symptom is a yellow check engine light that comes on occasionally but when the engine is restarted the light goes out. it appears to come on after an aggressive maneuver such as a quick lane change which seems to suggest a loose connector or broken wire losing connection. The problem is I'm not sure where to look. As background I replaced the timing chain about 2 months ago and removed lots of the turbo air hoses, etc so I may have caused this symptom. any of you folks got some suggestions/ advice? thx