| The readiness codes are two 8-digit numerical codes which indicate the status of the emission-relevant diagnoses. |
| If the diagnosis for a system is successfully performed (e.g. exhaust gas recirculation system), the relevant position of the readiness code switches from 1 to 0. |
| This diagnosis is performed at regular intervals during normal driving. If repairs have been done on a system relevant for the exhaust gas it is recommended to generate the readiness code as this guarantees that the systems operate according to the specifications. If a fault is detected during the diagnosis it is entered in the fault memory. |
| The readiness code is erased through deletion of the fault memory, that is all relevant points will be set to 1. |
| Generation of the readiness code means to activate the diagnostic functions such as diagnosis of fuel supply, diagnosis of other systems etc. |
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