Diagnostic mode 3: Check DTC Memory: Procedure

Connect diagnostic tester, see CONNECT DIAGNOSTIC TESTER .
Start engine and let run at idle.
NOTE:
Only if engine does not start:
- Operate starter for approx. 6 seconds. Do not switch ignition off afterward.
Under address word 33, select "Diagnostic mode 3:, Check DTC memory."
The number of stored malfunctions or "0 malfunctions detected" is displayed.
End diagnosis and switch ignition off.
Repair stored malfunctions according to DTC table:

NOTE:

The DTC table is sorted by SAE code.
"E-Gas"-relevant malfunctions are also indicated by the warning lamp for Electronic Power Control ("EPC warning lamp") in the instrument cluster.
In addition, "emission"-relevant malfunctions are indicated in the instrument cluster via the Malfunction Indicator Lamp (MIL).
In diagnostic mode 2, it can be determined at which operating condition a malfunction was detected and stored by the Engine Control Module (ECM), see DIAGNOSTIC MODE 2: CHECKING OPERATING CONDITIONS .
Erase DTC memory after repairing malfunction, see DIAGNOSTIC MODE 4: RESET/ERASE DIAGNOSTIC DATA .

Display example:

P0444EVAP canister purge regulator valve -N80- Open circuit

Explanation:

P0444 = SAE diagnostic trouble code (malfunction identification number).
Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- = malfunctioning wiring path or malfunctioning component.
Open circuit = Malfunction type as text