What's the 29cc BMW fault code?

The 29CC fault code in a BMW means there has been a mIS Fire in more than one cylinder. Multiple mIS Fires can be due to a failed spark plug, ignition coil, wiring between the power control module and the ignition coil, or the coil driver in the PCM. You may run into symptoms such as rough idling, hesitation while accelerating, long startup process, increased fuel consumption, and the car may die when stopped. You should inspect Your spark plugs and wiring for any possible breaks or cracks. If the code is still present even after replacing the spark plugs, coil packs, and/or spark plug wiring You may be looking at an issue with the fuel injection system.