"SERVICE NEWS ARTICLE - IS THE MIL ON WITH DTC P0606 (ECM/PCM PROCESSOR MALFUNCTION)? CHECK FOR AFTERMARKET SPARK PLUGS THAT INCLUDE A BUILT-IN CAPACITOR; THEY CAN CAUSE ELECTRICAL INTERFERENCE THAT CAN SET THIS DTC.
IF THE ENGINE HAS THAT TYPE OF SPARK PLUGS, SWAP THEM WITH A SET OF THE RECOMMENDED SPARK PLUGS. THEN, CLEAR THE DTC AND RETEST.
IF THE DTC DOESNÂ’T COME BACK, YOUÂ’VE FOUND THE PROBLEM. LET THE SERVICE ADVISOR KNOW SO HE OR SHE CAN CONTACT YOUR CUSTOMER FOR DIRECTION. BUT IF IT DOES COME BACK . . . THEN CONTINUE WITH NORMAL SYSTEM TROUBLESHOOTING."
