Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSAUDI2009A6 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 53 (4.2L V8 5V GENERIC SCAN TOOL, ENGINE CODE(S): BNK)ST GENERIC SCAN TOOLDIAGNOSTIC MODESDIAGNOSTIC MODE 3: INTERROGATING DTC MEMORYDTC MEMORY, CHECKING

2009 Audi A6 Base

DTC Memory, checking

2009 Audi A6 BaseSECTION DTC Memory, checking

WARNING: This page is about a different car, the 2006 Audi A6 and 2005 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.

Procedure

Connect diagnostic tester. → Diagnostic tester, connecting .
Start engine and let run at idle.

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.

In diagnostic function "address word 33 - OBD" select "Diagnostic Mode 3: Check DTC memory.".
Select desired measured value according to "PID XX", e.g. "PID 05-Coolant temperature", via the following table.

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

Repair stored malfunction(s) according to DTC table:

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:

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

End diagnosis and switch ignition off.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.