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.
NOTE:
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.
NOTE:
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 | Data Byte | Min. Value | Max. Value | Scaling Bit |
|---|---|---|---|---|---|
| $00: | Supported PIDs $01 - $20 (Both) | ||||
| $02: | Freeze Frame DTC | ||||
| - DTC That Caused Required Freeze Frame Data Storage | A, B | 00 00 | FF FF | Hexadecimal | |
| $03: | Fuel System Status (Both) | ||||
| - Fuel System "A" Status: (Both) | A | byte 1 of 2 | |||
| - Fuel System "B" Status: (Passat) | B | byte 2 of 2 | |||
(Passat)
|
|||||
| $04: | Calculated Load Value (Both) | ||||
| - Calculated Load Value (Both) | A | 0 % | 100 % | 100/255 % | |
| $05: | Engine Coolant Temperature (Both) | ||||
| - Engine Coolant Temperature (Both) | A | -40 °C | +215 °C | 1 °C with -40 °C offset | |
| $06: | Short Term Fuel Trim - Bank 1 (Both) | ||||
| - Short Term Fuel Trim - Bank 1 (Use If Only 1 Fuel Trim Value) (Both) | A | -100 % (lean) | +99.22 % (rich) | 100/128 % (0 % at 128) | |
| $07: | Long Term Fuel Trim - Bank 1 (Both) | ||||
| - Long Term Fuel Trim - Bank 1 (Use If Only 1 Fuel Trim Value) (Both) | A | -100 % (lean) | +99.22 % (rich) | 100/128 % (0 % at 128) | |
| $0B: | Intake Manifold Absolute Pressure (Both) | ||||
| - Intake Manifold Absolute Pressure (Both) | A | 0 kPa | 255 kPa | 1 kPa | |
| $°C: | Engine RPM (Both) | ||||
| - Engine RPM (Both) | A, B | 0 min-1 | 16383.75 min-1 | 0.25 rpm | |
| $0D: | Vehicle Speed Sensor (Both) | ||||
| - Vehicle Speed Sensor (Both) | A | 0 km/h | 255 km/h | 1 km/h | |
| $0E: | Ignition Timing Advance (Both) | ||||
| - Ignition Timing Advance For #1 Cylinder (Both) | A | -64 ° | 63.5 ° | 0.5 ° (0 ° at 128) | |
| $0F: | Intake Air Temperature (Both) | ||||
| - Intake Air Temperature (Both) | A | -40 °C | +215 °C | 1 °C with -40 °C offset | |
| $10: | Air Flow Rate from Mass Air Flow Sensor (Both) | ||||
| - Air Flow Rate from Mass Air Flow Sensor (Both) | A, B | 0 g/s | 655.35 g/s | 0.01 g/s | |
| $11: | Absolute Throttle Position (Both) | ||||
| - Absolute Throttle Position (Both) | A | 0 % | 100 % | 100/255 % | |
| $12: | Commanded Secondary Air Status (Both) | ||||
| - Commanded Secondary Air Status (Both) | A | 0000 | FFFF | byte 1 of 1 | |
(Passat)
|
|||||
| - Upstream Of First Catalytic Converter (Tiguan) | A, bit 0 | ||||
| - down stream Of First Catalytic Converter Inlet (Tiguan) | A, bit 1 | ||||
| - Atmosphere / Off (Tiguan) | A, bit 2 | ||||
| - Atmosphere / Off (Tiguan) | A, bit 3 | ||||
| $1F: | Time Since Engine Start (Both) | ||||
| - Time Since Engine Start (Both) | A, B | 0 sec. | 65, 535 sec. | 1 second per count | |
| $20: | Supported PIDs $21 - $40 (Both) | ||||
| $23: | Fuel Rail Pressure (Both) | ||||
| - Fuel Rail Pressure (Both) | A, B | 0 kPa | 655, 350 kPa | 10 kPa unsigned, 1 kPa = 0.1450377 PSI | |
| $2E: | Commanded Evaporative Purge (Both) | ||||
| - Commanded Evaporative Purge (Both) | A | 0 % | 100 % | 100/255 % | |
| $2F: | Fuel Level Input (Both) | ||||
| - Fuel Level Input (Both) | A | 0 % | 100 % | 100/255 % | |
| $33: | Barometric Pressure (Both) | ||||
| - Barometric Pressure (Both) | A | 0 kPa | 255 kPa | 1 kPa | |
| $40: | Supported PIDs $41 - $60 (Both) | ||||
| $42: | Control Module Voltage (Both) | ||||
| - Control Module Voltage (Both) | A, B | 0 V | 65.535 V | 0.001 V | |
| $43: | Absolute Load Value (Both) | ||||
| - Absolute Load Value (Both) | A, B | 0 % | 25700 % | 100/255 % | |
| $44: | Fuel/Air Commanded Equivalence Ratio (Both) | ||||
| - Fuel/Air Commanded Equivalence Ratio (Both) | A, B | 0 | 1.999 | 0.0000305 | |
| $45: | Relative Throttle Position (Both) | ||||
| - Relative Throttle Position (Both) | A | 0 % | 100 % | 100/255 % | |
| $46: | Ambient Air Temperature (Both) | ||||
| - Ambient Air Temperature (Both) | A | -40 °C | +215 °C | 1 °C with -40 °C offset | |
| $47: | Absolute Throttle Position B (Both) | ||||
| - Absolute Throttle Position B (Both) | A | 0 % | 100 % | 100/255 % | |
| $49: | Accelerator Pedal Position D (Both) | ||||
| - Accelerator Pedal Position D (Both) | A | 0 % | 100 % | 100/255 % | |
| $4A: | Accelerator Pedal Position E (Both) | ||||
| - Accelerator Pedal Position E (Both) | A | 0 % | 100 % | 100/255 % | |
| $4C: | Commanded Throttle Actuator Control (Both) | ||||
| - Commanded Throttle Actuator Control (Both) | A | 0 % | 100 % | 100/255 % | |
| $51: | Type Of Fuel Currently Being Utilized By The Internal Combustion Engine (Both) | ||||
| - Type Of Fuel Currently Being Utilized By The Vehicle (Both) | A | 00 | FF | byte 1 of 1 | |
| - 01 hex: Gasoline/petrol GAS (Passat) | |||||
| - $01 (Tiguan) | A | ||||
| $56: | Long Term Secondary O2 Sensor Fuel Trim - Bank 1 (Use If Only 1 Fuel Trim Value) (Both) | ||||
| - Long Term Secondary O2 Sensor Fuel Trim - Bank 1 (Use If Only 1 Fuel Trim Value) (Both) | A | - 100 % (lean) | + 99.22 % (rich) | 100/128 % (0 % at 128) | |
| $60: | Supported PIDs $61 - $80 (Both) | ||||
| $62: | Actual Engine - Percent Torque (Passat) | ||||
| - Actual Engine - Percent Torque (Passat) | A | -125 % | 130 % | 1 % with -125 % offset | |
| $63: | Engine Reference Torque (Passat) | ||||
| - Engine Reference Torque (Passat) | A | 0 Nm | 65, 535 Nm | 1 Nm | |
| $67: | Engine Coolant Temperature (Both) | ||||
| - ECT Sensor 1 Supported (Tiguan) | A, bit 0 | ||||
| - ECT Sensor 2 Supported (Tiguan) | A, bit 1 | ||||
| - Engine Coolant Temperature 1 (Both) | B | -40 °C | +215 °C | 1 °C with -40 °C offset | |
| - Engine Coolant Temperature 2 (Both) | C | -40 °C | +215 °C | 1 °C with -40 °C offset | |
| $70: | Boost Pressure Control (Both) | ||||
| - Boost Pressure Sensor A Supported (Tiguan) | A, bit 1 | ||||
| - Boost Pressure Sensor A (Both) | D, E | 0 kPa | 2047.96875 kPa | 0.03125 kPa | |
| $9D: | Fuel Rate (Passat) | ||||
| - Engine Fuel Rate (Passat) | A, B | 0 g/s | 1310.7 g/s | 0.02 g/s | |
| - Vehicle Fuel Rate (Passat) | C, D | 0 g/s | 1310.7 g/s | 0.02 g/s | |
| $9E: | Engine Exhaust Flow Rate (Passat) | ||||
| - Engine Exhaust Flow Rate (Passat) | A, B | 0 kg/h | 13107.0 kg/h | 0.2 kg/h |
-- Switch the ignition off.