| The conformity code is an 8-digit numerical code that indicates the state of diagnostics relevant to exhaust emissions. |
| If the diagnostic of a system (e.g. catalyst) has been carried out successfully, the corresponding position of the code changes from 1 to 0. |
| Diagnoses are carried out periodically under normal driving conditions. After repairing a system relevant to exhaust emissions, the conformity code should be generated to ensure the correct operation of the systems in question. If a fault is detected during diagnosis, it is stored in the memory. |
| The conformity code is cleared each time the fault memory is cleared or the voltage supply is interrupted. |
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