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Home >> Mercedes Benz >> 1996 >> E300 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Diesel >> Self-Diagnostic System >> Diagnostic Trouble Code Memory (Section 11) >> Notes
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Diagnostic Trouble Code Memory (Section 11): Notes

The signal plausibility is checked on all input and output connections during operation. All malfunctions which occur are stored in the diagnostic trouble code memory of the IFI control module (N3/7). The DTC memory remains active even if the ignition is turned OFF or the vehicle's battery is disconnected.

With emission related faults the CHECK ENGINE MIL (A1e26) lights up and/or the malfunction indicator displays:

The faults are identified with an OBD failure code. See FAULT CODE IDENTIFICATION  table.