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, Hex-ID, Component-ID, 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.
-- Select "Diagnostic Mode 2: Obtain operating conditions".
-- From the following table, select the desired "PID", e.g. "PID $05 Coolant temperature" that is to be 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 |
|---|---|
| $00: | Supported PIDs $01 - $1F |
| $02: | DTC Which Triggered Freeze Frame Data |
| $03: | Fuel System Status |
| $04: | Calculated Load Value |
| $05: | Coolant Temperature |
| $06: | O2 Sensor Bank 1 |
| $07: | O2 Sensor Adaptation Value Bank 1 |
| $0B: | Manifold Pressure |
| $0C: | Engine Speed |
| $0D: | Vehicle Speed |
| $0E: | Firing Angle Cylinder 1 |
| $0F: | Intake Air Temperature |
| $11: | Absolute Throttle Position 1 |
| $12: | Secondary Air Status |
| $1F: | Time Since Engine Start |
| $20: | Supported PIDs $21 - $3F |
| $23: | Fuel Pressure (Rail Pressure) |
| $2E: | Fuel Tank Vent Valve Control |
| $2F: | Fuel Tank Level |
| $33: | Ambient Air Pressure |
| $40: | Supported PIDs $41 - $5F |
| $42: | Engine Control Module System Voltage |
| $43: | Absolute Load Value |
| $44: | Lambda Value |
| $45: | Relative Throttle Position |
| $46: | Ambient Air Temperature |
| $47: | Absolute Throttle Position 2 |
| $49: | Accelerator Pedal Position 1 Absolute |
| $4A: | Accelerator Pedal Position 2 Absolute |
| $4C: | Throttle Position Set Point |
| $51: | Fuel Type |
| $54: | Vapor Pressure Tank Ventilation System |
| $56: | Offset Lambda Control Behind Catalyst, Bank 1 |
| $60: | Supported PIDs $61 - $80 |
| $67: | Coolant Temperature |
| $68: | Intake Temperature |
| $6C: | Throttle And Relative Throttle Position A / B |
| $6D: | Fuel Pressure Control |
| $6F: | Turbocharger Compressor Inlet Pressure |
| $70: | Boost Pressure Control |
| $75: | Turbocharger A Temperature |
| $77: | Intercooler Temperature |
| $80: | Supported PIDs 81 - 9F |
| $87: | Intake Manifold Pressure |
| $9F: | Fuel System Percentage Use |
-- Switch the ignition off.