Code 41, Cylinder Select Error: Notes
WARNING: This page is about a different car, the 1990 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
The ECM used for this engine can also be used for other engines. The difference is in the MEM-CAL. If a Code 41 sets, the incorrect MEM-CAL has been installed or MEM-CAL is faulty and must be replaced.
NOTE:
Test numbers refer to test numbers on diagnostic chart.
Test Number 1) Turn ignition off and clear codes. Start engine and run for one minute. If code resets, check for faulty connection due to MEM-CAL not locked in place or incorrectly installed. If code does not recur, code is intermittent. See DIAGNOSTIC AIDS.