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Home >> Volkswagen >> 2022 >> Passat R-Line >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Generic Scan Tool (General Information, Description And Operation ) >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Modes 01 - 0A >> Diagnostic Mode 01 - Read Current System Data - 2020 PASSAT Only

Diagnostic Mode 01 - Read Current System Data - 2020 PASSAT Only

NOTE:

Depending on scan tool and protocol used, the information in diagnostic mode 01 may be referred to by different names such as Test-ID (TID), Hex-ID, Component-ID (CID), or On-Board Diagnostic Monitor Identifier (OBDMID).

Diagnostic Mode 01 makes it possible to access current emissions-related measured values and diagnostic data. The original measured values (no replacement values), input and output data and system status information are displayed using Diagnostic Mode 1.

Test requirement

Procedure 

-- Connect the scan tool.

-- Start the engine and run at idle.

-- Select "Diagnostic Mode 1: Obtain data".

-- From the following table, select the desired "PID" that is to be monitored, e.g. "PID $05 Coolant Temperature".

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
$01: Monitor status since DTCs cleared        
  - Number Of Emission-Related DTCs And MIL Status A     byte 1 of 4
  - Support And Status Of Monitors (May Be Continuous Or Non - Continuous) B     byte 2 of 4
  Number of emission-related DTCs and MIL status Supported tests which are continuous and Status of continuous monitoring tests since DTC cleared
  • Bit 0/4: Misfire monitoring
  • Bit 1/5: Fuel system monitoring
  • Bit 2/6: Comprehensive component monitoring
        
  - Supported Monitors (Non - Continuous) C     byte 3 of 4
  - Status of Monitors (Non - Continuous) D     byte 4 of 4
  Supported tests run at least once per trip Status of tests run at least once per trip
  • Bit 0: Catalyst monitoring
  • Bit 1: Heated catalyst monitoring
  • Bit 2: Evaporative system monitoring
  • Bit 3: Secondary air system monitoring
  • Bit 4: 0
  • Bit 5: Oxygen sensor monitoring
  • Bit 6: Oxygen sensor heater monitoring
  • Bit 7: EGR and/or VVT system monitoring
        
$03: Fuel System Status        
  - Fuel System "A" Status: A     byte 1 of 2
  - Fuel System "B" Status: B     byte 2 of 2
 
  • Bit 0 = 1: Open loop - has not yet satisfied conditions to go closed loop
  • Bit 1 = 1: Closed loop - using oxygen sensor(s) as feedback for fuel control
  • Bit 2 = 1: Open loop due to driving conditions (e.g. power enrichment, deceleration enleanment)
  • Bit 3 = 1: Open loop - due to detected system fault
  • Bit 4 = 1: Closed loop, but fault with at least one oxygen sensor - may be using single oxygen sensor for fuel control
        
$04: Calculated Load Value        
  - Calculated Load Value A 0% 100% 100/255%
$05: Engine Coolant Temperature        
  - Engine Coolant Temperature A -40 °C +215 °C 1 °C with -40 °C offset
$06: Short Term Fuel Trim - Bank 1        
  - Short Term Fuel Trim - Bank 1 A, B -100 % (lean) +99.22 % (rich) 100/128 % (0 % at 128)
$07: Long Term Fuel Trim - Bank 1        
  - Long Term Fuel Trim - Bank 1 A, B -100 % (lean) +99.22 % (rich) 100/128 % (0 % at 128)
$0B: Intake Manifold Absolute Pressure        
  - Intake Manifold Absolute Pressure A 0 kPa 255 kPa 1 kPa
$0C: Engine RPM        
  - Engine RPM A, B 0 min-1 16383.75 min-1 0.25 rpm
$0D: Vehicle Speed Sensor        
  - Vehicle Speed Sensor A 0 km/h 255 km/h 1 km/h
$0E: Ignition Timing Advance        
  - Ignition Timing Advance For #1 Cylinder A -64 ° 63.5 ° 0.5 ° (0 ° at 128)
$0F: Intake Air Temperature        
  - Intake Air Temperature A -40 °C +215 °C 1 °C with -40 °C offset
$10: Air Flow Rate from Mass Air Flow Sensor        
  - Air Flow Rate from Mass Air Flow Sensor A, B 0 g/s 655.35 g/s 0.01 g/s
$11: Absolute Throttle Position        
  - Absolute Throttle Position A 0 % 100 % 100/255 %
$12: Commanded Secondary Air Status        
  - Commanded Secondary Air Status A 00 FF byte 1 of 1
 
  • Bit 0 =1: upstream of first catalytic converter
  • Bit 1 =1: downstream of first catalytic converter
  • Bit 2 =1: atmosphere / off
        
$13: Location of Oxygen Sensors        
  - Location of Oxygen Sensors A 00 FF byte 1 of 1
 
  • Bit 0 = 1: Bank 1 - Sensor 1 present at that location
  • Bit 1 = 1: Bank 1 - Sensor 2 present at that location
        
$15: Oxygen Sensor Output Voltage Bank 1 - Sensor 2        
    A 0 V 1.275 V 0.005 V
    B 99.22 % (lean) 99.22 % (rich) 100/128 % (0 % at 128)
$1C: OBD Requirements For Vehicle Or Engine        
  - OBD Requirements To Which Vehicle Or Engine Is Certified A 03 03 byte 1 of 1
$1F: Time Since Engine Start        
  - Time Since Engine Start A, B 03 65535 sec. 1 second per count
$20: Supported PIDs $21 - $40        
$21: Distance Traveled While MIL Is Activated        
  - Distance Traveled While MIL Is Activated A, B 0 km 65535 km 1 km per count
$23: Fuel Rail Pressure        
  - Fuel Rail Pressure A, B 0 kPa 655350 kPa 10 kPa unsigned, 1 kPa = 0.1450377 PSI
$2E: Commanded Evaporative Purge        
  - Commanded Evaporative Purge A 0 % 100 % 100/255 %
$2F: Fuel Level Input        
  - Fuel Level Input A 0 % 100 % 100/255 %
$30: Number Of Warm-Ups Since DTCs Cleared        
  - Number Of Warm-Ups Since DTCs Cleared A 0 255 1 warm-up per count
$31: Distance Traveled While MIL is Activated        
  - Distance Traveled While MIL is Activated A, B 0 km 65535 km 1 km per count
$33: Barometric Pressure        
  - Barometric Pressure A 0 kPa 255 kPa 1 kPa
$34: Wide Ratio O2 Lambda Value And Current, Bank 1, Sensor 1        
  - Lambda Value, Equivalence Ratio Bank 1, Sensor 1 (Uses PID $13) Or Equivalence Ratio Bank 1, Sensor 1 (Uses PID $1D) A, B 0 1.999 0.0000305
  - Wide Range O2S Current, O2 Sensor Bank 1, Sensor 1 (Uses PID $13) Or O2 Sensor Bank 1, Sensor 1 (Uses PID $1D) C, D -128 mA 127.996 mA 0.00390625 mA
$3C: Catalyst Temperature Bank 1, Sensor 1        
  - Catalyst Temperature Bank 1, Sensor 1 A, B -40 °C +6513.5 °C 0.1 °C with -40 °C offset
$40: Supported PIDs $41 - $60        
$41: Monitor Status This Driving Cycle        
  - Monitor Status This Driving Cycle A     byte 1 of 4
  - Enable Status Of Supported Monitors This Monitoring Cycle (May Be Continuous Or Non - Continuous) : B     byte 2 of 4
  Reserved (00 00) Enable and Completion status of continuous monitors this monitoring cycle.
  • Bit 0/4: Misfire monitoring
  • Bit 1/5: Fuel system monitoring
  • Bit 2/6: Comprehensive component monitoring
        
  - Enable Status Of Non - Continuous Monitors This Monitoring Cycle: C     byte 3 of 4
  - Completion Status Of Non - Continuous Monitors This Monitoring Cycle D     byte 4 of 4
  Enable status of noncontinuous monitors this mon. cycle Completion status of noncontinuous monitors this mon. cycle
  • Bit 0: Catalyst monitoring
  • Bit 1: Heated catalyst monitoring
  • Bit 2: Evaporative system monitoring
  • Bit 3: Secondary air system monitoring
  • Bit 4: 0
  • Bit 5: Oxygen sensor monitoring
  • Bit 6: Oxygen sensor heater monitoring
  • Bit 7: EGR and/or VVT system monitoring
        
$42: Control Module Voltage        
  - Control Module Voltage A, B 0 V 65.535 V 0.001 V
$43: Absolute Load Value        
  - Absolute Load Value A, B 0 % 25700 % 100/255 %
$44: Fuel/Air Commanded Equivalence Ratio        
  - Fuel/Air Commanded Equivalence Ratio A, B 0 1.999 0.0000305
$45: Relative Throttle Position        
  - Relative Throttle Position A 0 % 100 % 100/255 %
$46: Ambient Air Temperature        
  - Ambient Air Temperature A -40 °C +215 °C 1 °C with -40 °C offset
$47: Absolute Throttle Position B        
  - Absolute Throttle Position B A 0 % 100 % 100/255 %
$49: Accelerator Pedal Position D        
  - Accelerator Pedal Position D A 0 % 100 % 100/255 %
$4A: Accelerator Pedal Position E        
  - Accelerator Pedal Position E A 0 % 100 % 100/255 %
$4C: Commanded Throttle Actuator Control        
  - Commanded Throttle Actuator Control A 0 % 100 % 100/255 %
$51: Type Of Fuel Currently Being Utilized By The Internal Combustion Engine        
  - Type Of Fuel Currently Being Utilized By The Vehicle A 00 FF byte 1 of 1
  - 01 hex: Gasoline/petrol GAS        
$56: Long Term Secondary O2 Sensor Fuel Trim - Bank 1 (Use If Only 1 Fuel Trim Value)        
  - Long Term Secondary O2 Sensor Fuel Trim - Bank 1 (Use If Only 1 Fuel Trim Value) A - 100 % (lean) + 99.22 % (rich) 100/128 % (0 % at 128)
$60: Supported PIDs $61 - $80        
$62: Actual Engine - Percent Torque        
  - Actual Engine - Percent Torque A -125 % 130 % 1 % with -125 % offset
$63: Engine Reference Torque        
  - Engine Reference Torque A, B 0 Nm 65, 535 Nm 1 Nm
$67: Engine Coolant Temperature        
  - Engine Coolant Temperature 1 B -40 °C +215 °C 1 °C with -40 °C offset
  - Engine Coolant Temperature 2 C -40 °C +215 °C 1 °C with -40 °C offset
$70: Boost Pressure Control        
  - Boost Pressure Sensor A D, E 0 kPa 2047.96875 kPa 0.03125 kPa
$80: Supported PIDs $81 - $A0        
$8E: Engine Friction - Percent Torque        
  - Engine Friction - Percent Torque A -125% 130% 1% with -125% offset
$9D: Fuel Rate        
  - Engine Fuel Rate A, B, 0 g/s 1310.7 g/s 0.02 g/s
  - Vehicle Fuel Rate C, D 0 g/s 1310.7 g/s 0.02 g/s
$9E: Engine Exhaust Flow Rate        
  - Engine Exhaust Flow Rate A, B 0 kg/h 13107.0 kg/h 0.2 kg/h
$A0: Supported PIDs $A1 - $C0        
$A4: Transmission Actual Gear        
  - Transmission Actual Gear Status B 0000 1111 1 (bin)
$A6: Vehicle Odometer        
  - Vehicle Odometer Reading A, B, C, D 0 km 429, 496, 729.5 km 0.1 km

-- Switch the ignition off.

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