Diagnostic Mode 2: Checking Operating Conditions

2004 Audi A4 Sedan (8E2) L4-1.8L Turbo (AMB)SECTION Diagnostic Mode 2: Checking Operating Conditions


Mode 2: Checking Operating Conditions
The operating conditions under which the Engine Control Module has detected and stored an emissions-relevant DTC are displayed in this diagnostic mode.

Work procedure
- Connect diagnostic tester. Diagnostic Tester, Connecting
- In diagnostic function "33 - OBD", select "Mode 2: Check operating conditions".
- Select the desired operating condition via the following table according to the PID (Parameter Identification), e.g. "PID 05: Coolant temperature".


NOTE: Measuring values of Engine Control Module (ECM) are displayed under "10 - Engine electronics" and measuring values of Transmission Control Module (TCM) are displayed under "1A - Transmission electronics".


PID1) Display operating conditions
02: DTC which triggered the current reception of all control module information
03: Condition of the fuel system
04: Calculated load condition value
05: Coolant temperature
06: Short time gasoline-air ratio bank 1
07: Gasoline-air ratio bank 1
12: Engine rotations per minute (RPM)
13: Vehicle speed

1) PIDs that are not relevant are not listed.

If DTCs are displayed in "PID 02":
- Repair stored malfunction(s) according to DTC table:
- SAE P0xxx-DTCs P0010
- SAE P1xxx-DTCs P1176
- SAE P2xxx-DTCs P2101

Final procedures
The following work steps must be performed in the described sequence after the malfunction(s) have been repaired:
1 - Check DTC memory "Mode 3: Check DTC memory". Diagnostic Mode 3: Check DTC Memory
2 - If necessary, erase DTC memory "Mode 4: Reset/erase diagnostic data". Diagnostic Mode 4: Reset/Erase Diagnostic Data
3 - Generate readiness code. Readiness Code, Generating

- End diagnosis and switch ignition off.
RENDER: 1.0x

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When to See a Mechanic

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

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