Readiness Code, Function

Readiness code

The readiness code appears as an 8-digit display in measuring value block 086, display field 1. Each of the 8 digits is allocated to a specific exhaust related system.

During a test sequence (which must be carried out in its entity), On Board Diagnostic (OBD) checks the function of each of these systems and then changes the character assigned to it in the 8-digit display from a "1" to a "0".

When the readiness code is generated after a successfully completed test sequence, it reads "0 0 0 0 0 0 0 0" (measuring value block 086, display field 1).

If a single test is completed entirely, but indicated as "not OK", a DTC will be stored in DTC memory. Check DTC Memory.

Readiness code is returned to "0 1 1 0 1 1 0 1" if:
- DTC memory was erased,
- a new Engine Control Module (ECM) was installed
In this case, readiness code must be regenerated. Readiness Code, Generating


NOTE: During driving operation in various load conditions, exhaust relevant tests are performed by the control module within a "short trip" and readiness code is generated on its own. In this case, however, concluding control possibilities are not available, meaning that it will not be indicated whether all positions of the readiness code are set to "0".