Diagnostic Mode 02 - Read Operating Conditions
When an emissions-related fault (pending DTC, visible in mode 07) is first detected, operating conditions are stored. Mode 02 makes it possible to access this freeze frame data as soon as this fault is shown in mode 03. Each control module only shows freeze frame data for one fault via mode 02. Therefore, there are two priority levels. If there is a malfunction with higher priority, the freeze frame data is overwritten.
-- Fault with higher priority: Misfire malfunction or fuel trim malfunction.
-- Fault with normal priority: All other emissions-related faults.
Depending on scan tool and protocol used, the information in diagnostic mode 02 may be referred to by different names such as Test-ID (TID), Hex-ID, Component-ID (CID), or On-Board Diagnostic Monitor Identifier (OBDMID).
Procedure
-- Connect the scan tool.
-- Start the engine and run at idle.
If the engine does not start, crank the engine using starter for at least 5 seconds, do not switch the ignition off afterward under any circumstances.
-- Select "Diagnostic Mode 2: Obtain operating conditions.".
-- From the following table, select the desired the "PID", e.g. "PID 05-Coolant temperature" that is to be monitored.
More than one "PID" may be selected and monitored.
The current values of the component or system that is being monitored will be displayed on the scan tool screen.
| PID | Component or System |
|---|---|
| 02: | Fault code that activated the Freeze Frame save |
| 03: | Fuel system status |
| 04: | Calculated load value |
| 05: | Coolant temperature |
| 06: | Oxygen sensor integrator Bank 1 / Bank 3 |
| 07: | Oxygen sensor adaptation value Bank 1 / Bank 3 |
| 08: | Oxygen sensor integrator Bank 2 / Bank 4 |
| 09: | Oxygen sensor adaptation Bank 2 / Bank 4 |
| 11: | Intake manifold pressure |
| 12: | Engine speed |
| 13: | Vehicle speed |
| 14: | Ignition angle |
| 15: | Intake air temperature |
| 16: | Air mass |
| 17: | Absolute throttle valve position 1 (throttle valve signal 1) |
| 18: | Secondary air injection status |
| 31: | Time since engine start |
| 32: | supported definition, PIDs 33 - 64 |
| 35: | Fuel pressure (rail pressure) (only FSI) |
| 44: | EGR activation (only EGR designs) |
| 45: | EGR error (only EGR designs) |
| 46: | Tank ventilation valve activation |
| 51: | Ambient pressure |
| 64: | Supported definition, PIDs 65 - 96 |
| 66: | Control modules system voltage |
| 67: | Absolute load value |
| 68: | Oxygen sensor specified value |
| 69: | Relative throttle valve position |
| 70: | Ambient temperature |
| 71: | Absolute throttle valve position 2(Throttle valve position signal 2) |
| 73: | Absolute accelerator pedal position 1 |
| 74: | Absolute accelerator pedal position 2) |
| 76: | Throttle valve specified position |
| 86: | Offset oxygen sensor control behind cat., Bank 1 / Bank 3 |
| 88: | Offset oxygen sensor control behind cat., Bank 2 / Bank 4 |
-- Switch the ignition off.
-- End of diagnosis.