LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Audi >> 2005 >> A6 4.2 L >> Repair and Diagnosis >> Engine Performance >> Ignition System >> 4.2L V8 5V Generic Scan Tool, Engine Code(S): BNK >> ST Generic Scan Tool >> Diagnostic modes >> Diagnostic Mode 3: Interrogating DTC memory >> DTC Memory, checking
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Memory, checking

Procedure 

NOTE:
  • If the engine does not start, crank engine using starter for at least 5 seconds, do not switch the ignition off afterward under any circumstances.
NOTE:
  • The DTC tables are sorted by SAE code.
  • Measuring values of the Engine Control Module (ECM) J623 are displayed under "10 - Engine electronics" and measuring values of Transmission Control Module (TCM) J217 are displayed under "1A - Transmission electronics".
  • In addition, emission-relevant malfunctions are indicated in the instrument cluster via the lighting up of the Malfunction Indicator Lamp (MIL) K83.
  • Electronic throttle malfunctions are also indicated by the Electronic Power Control (EPC) Warning Lamp K132 in the instrument cluster.
  • In diagnostic Mode 2: Check operating conditions, it can be determined at which operating condition the Engine Control Module (ECM) J623 detected and stored a malfunction. → Diagnostic Mode 2: Obtain operating conditions .
Indication example Explanation
P0444 SAE Diagnostic Trouble Code (DTC)
Evaporative Emission (EVAP) Canister Purge Regulator Valve Malfunctioning wiring path or malfunctioning component
Circuit Open Malfunction type as Text

SAE P0xxx-DTCs. → SAE P0xxx-DTCs .

SAE P1xxx-DTCs → SAE P1xxx-DTCs .

SAE P2xxx-DTCs. → SAE P2xxx-DTCs .

SAE P3xxx-DTCs. → SAE P3xxx-DTCs .

SAE U0xxx-DTCs, → SAE U0xxx-DTCs .

Final procedures 

The following work steps must be performed in the described sequence after the malfunction(s) have been repaired:

  1. Check DTC memory..
  2. If necessary, erase DTC memory..
  3. If DTC memory was erased, generate readiness code..