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HOMESERVICE MANUALSAUDI2009A6 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 82 (5.2L - GENERIC SCAN TOOL, ENGINE CODE(S): BXA (ST-GENERIC SCAN TOOL))ST - GENERIC SCAN TOOLDIAGNOSTIC TROUBLE CODE (DTC) TABLESSAE P0XXX-DTCSADDITIONAL EXHAUST REGULATION
2009 Audi A6 Base

Additional exhaust regulation

2009 Audi A6 BaseSECTION Additional exhaust regulation
WARNING: This page is about a different car, the 2009 Audi S6, 2008 Audi S6, and 2007 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.
DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum
P0418 Secondary Air Injection System Control "A" Circuit Signal voltage 4.45.6 V
  • Pump relay, Commanded off
  • Engine speed, >40 RPM
 0.5 Seconds
  • Continuous
  • 1 DCY
P0420 Catalyst System Efficiency Below Threshold (Bank 1) 1.0 -
  • Ambient Temp. > -10° C
  • Delta mass airflow 15 kg/h/s
  • EVAP purge flow 30%
  • Mass air flow 30-100 kg/h
  • Engine speed, 1000-2200 RPM
  • Catalyst temp. 400-630° C
  • Delta catalyst temp - 15 k/s
 60 Seconds
  • Once/DCY
  • 2 DCY
P0430 Warm Up Catalyst Efficiency Below Threshold Bank 2 1.0 -
  • Ambient Temp. > -10° C
  • Delta mass airflow 15 kg/h/s
  • EVAP purge flow 30%
  • Mass air flow 30-100 kg/h
  • Engine speed, 1000-2200 RPM
  • Catalyst temp. 400-630° C
  • Delta catalyst temp - 15 k/s
 60 Seconds
  • Once/DCY
  • 2 DCY
P0441 Evaporative Emission System Incorrect Purge Flow
  • Deviation lambda control 3.5%
  • Deviation idle control 20%
  • Engine speed, Idle
  • Engine speed deviation, 80 RPM
  • Time after engine start>615 Sec.
  • ECT >59.25° C Or substitute ECT >59.25° C
  • IAT >5.25° C
  • IAT at start >5.25° C
  • Altitude2600 M
 25 Seconds
  • Once/DCY
  • 2 DCY
P0442 Evaporative Emission System Leak Detected (Small Leak) Time for pressure drop 1.7-2.2 Seconds
  • EVAP purge valve, Closed
  • LDP, Activated
  • Altitude, 2600 m
  • IAT, >4° C
  • Delta ambient pressure, 2.5 kPa
  • IAT drop after engine start, 6 K
  • Time after engine start, 2301200 Sec.
  • intake manifold vacuum, >15 kPa
  • ECT, 4115° C
  • ECT at start, 435° C
  • Number of diagnostic attempts, 5
  • Vehicle speed, >25 MPH
  • Selected gear, Any drive
 140 Seconds
  • Once/DCY
  • 2 DCY
P0444 Evaporative Emission System Purge Control Valve Circuit Open Signal voltage > 4.4- 5.6 V
  • EVAP purge valveCommanded off
  • Engine speed > 40 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
P0449 Evaporative Emission System Vent Valve/Solenoid Circuit Signal voltage > 4.4- 5.5 V
  • EVAP purge valveCommanded off
  • Engine speed > 40 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
P0455 Evaporative Emission System Leak Detected (gross leak/no flow) Time for pressure drop 0.95 -1.1 Seconds
  • EVAP purge valve, Closed
  • LDP, Activated
  • Altitude, 2600 m
  • IAT, >4° C
  • Delta ambient pressure, 2.5 kPa
  • IAT drop after engine start, 6 K
  • Time after engine start, 2301200 Sec.
  • intake manifold vacuum, >15 kPa
  • ECT, 4115° C
  • ECT at start, 435° C
  • Number of diagnostic attempts, 5
  • Vehicle speed, >25 MPH
  • Selected gear, Any drive
 280 Seconds
  • Once/DCY
  • 2 DCY
P0456 Evaporative Emission System Leak Detected (very small leak) Time for pressure drop, 4 - 5 Seconds
  • EVAP purge valve, Closed
  • LDP, Activated
  • Altitude, 2600 m
  • IAT, >4° C
  • Delta ambient pressure, 2.5 kPa
  • IAT drop after engine start, 6 K
  • Time after engine start, 2301200 Sec.
  • intake manifold vacuum, >15 kPa
  • ECT, 4115° C
  • ECT at start, 435° C
  • Number of diagnostic attempts, 5
  • Vehicle speed, >25 MPH
  • Selected gear, Any drive
Additional:
  • Vehicle speed, 2593 MPH
  • Vehicle acceleration, 3 m/s2
  • Delta ambient pressure, 0.2 kPa
  • Delta engine load, 36%/seg.
 140 Seconds
  • Once/DCY
  • 2 DCY
P0458 Evaporative Emission System Purge Control Valve Circuit Low Signal voltage, 3.25.. 2.15 V
  • EVAP purge valveCommanded off
  • Engine speed > 40 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
P0459 Evaporative Emission System Purge Control Valve Circuit High Signal current, > 2.2 A
  • EVAP purge valve, Commanded on
  • Engine speed, > 40 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
P0491 Secondary Air Injection System Insufficient Flow Bank 1
  • Relative secondary air mass flow 0.047
  • Relative secondary sir mass flow, 0.05
  • Mass air flow, 24140 kg/h
  • ECT, 5.360° C
  • IAT, >5.3° C
  • Altitude, 2600 m
  • Delta engine load, 7%/rev
  • Functional check, ready, no faults
Flow Check
  • Mass air flow (), 1460 kg/h
  • Vehicle speed, 3.1 MPH
  • Mass air intergral after start, >3 Kg
  • Delta engine load, 10%/rev
  • Engine speed, idle
 3060 Seconds
  • Once/DCY
  • 2 DCY
P0492 Secondary Air Injection System Insufficient Flow Bank 2
  • Relative secondary air mass flow 0.047
  • Relative secondary sir mass flow, 0.05
  • Mass air flow, 24140 kg/h
  • ECT, 5.360° C
  • IAT, >5.3° C
  • Altitude, 2600 m
  • Delta engine load, 7%/rev
  • Functional check, ready, no faults
Flow Check
  • Mass air flow (), 1460 kg/h
  • Vehicle speed, 3.1 MPH
  • Mass air intergral after start, >3 Kg
  • Delta engine load, 10%/rev
  • Engine speed, idle
 3060 Seconds
  • Once/DCY
  • 2 DCY
P0498 Evaporative Emission System Vent Valve Control Circuit Low Signal Voltage, 3.01 V
  • EVAP purge valveCommanded off
  • Engine speed > 80 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
P0499 Evaporative Emission System Vent Valve Control Circuit High Signal current, 2.7-5.5 A
  • EVAP purge valveCommanded off
  • Engine speed > 40 RPM
 0.5 Seconds
  • Continuous
  • 2 DCY
RENDER: 1.0x

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