NHTSA ID Number: 10203513
Manufacturer Communication Number: QRSB Audi
Q7
TSB/Document Date: 2021-11-15
Summary
Quick reference specification book.
• Deviation HO2S control < 4%
• Deviation throttle controller
< 8.0%
• Deviation press. control
< 4 kpa
P0442
Evaporative Emission System
Leak Detected (Small Leak)
Time for pressure drop
< 1.06 - 1.3 s.
P0444
Evaporative Emission System
Purge Control Valve Circuit
Open
Signal current < 0.8mA
180
Audi Q7 Quick Reference Specification Book
•
September 2013
DTC
Error Message
Malfunction Criteria and
Threshold Value
P0445
Evaporative Emission System
Purge Control Valve Short to
Ground
• Signal voltage < 2.0 V
• Signal current > 5.0 A
P0455
Evaporative Emission System
Leak Detected (large leak)
Time for pressure drop < 0.65
- 0.7 s.
P0456
Evaporative Emission System
Leak Detected (very small
leak)
Time for press drop
< 3.2 - 5.5 s
P0458
Evaporative Emission System
Purge Control Valve Circuit
Low
Signal voltage, < 2.15 - 3.25 V
P0459
Evaporative Emission System
Purge Control Valve Circuit
High
Signal current > 2.20 A
P0491
Secondary Air Injection
System Insufficient Flow
Bank 1
Diference between reference
AIR mass flow and calculated
AIR mass flow > 18 to 21 [kg/h]
P0492
Secondary Air Injection
System Insufficient Flow
Bank 2
Diference between reference
AIR mass flow and calculated
AIR mass flow > 18 to 21 [kg/h]
Speed and Idle Control
Error Message
Malfunction Criteria and
Threshold Value
P0501
Vehicle Speed Sensor "A"
Range/Performance
Communication check
• Sensor signal failure
P0502
Vehicle Speed Sensor "A"
Circuit Low
Communication check
• Sensor signal failure
P0503
Vehicle Speed Sensor
Range/Performance
Vehicle speed >200 km/h
P0506
Idle Air Control System RPM
Lower Than Expected
Engine speed deviation
< -80 RPM
P0507
Idle Air Control System - RPM
Higher Than Expected
Engine speed deviation
> 80 RPM
P050A
Cold Start Idle Air Control
System Performance
Out of range low
• Engine speed deviation 1
< 80 - 250 RPM
Out of range high
• Engine speed deviation 2
> 80 - 250 RPM
Audi Q7 Quick Reference Specification Book
•
September 2013
DTC Chart
DTC
181
DTC
Error Message
Malfunction Criteria and
Threshold Value
P050B
Cold Start Ignition Timing
Performance
Idle Difference between
commanded spark timing vs.
actual value > 20%
P052A
Cold Start "A" Camshaft
Position Timing OverAdvanced Bank 1
• Adjustment angle difference
> 10° CA
• Number of checks 2
P052C
Cold Start "A" Camshaft
Position Timing OverAdvanced Bank 2
• Adjustment angle difference
> 10° CA
• Number of checks 2
P053F
Cold Start Fuel Pressure
Performance
Target pressure-actual pressure
> 1.5 MPa
Control Module and Output Signals
DTC
Error Message
Malfunction Criteria and
Threshold Value
P0601
Internal Control Module
Memory Check Sum Error
Internal check sum, incorrect
P0603
Internal Hardware Check
SPI communication lost
P0604
Internal Control Module
Random Access Memory
(RAM) Error
Write ability check, failed
P0605
Internal Control Module Read
Only Memory (ROM) Error
Check sum incorrect
P0606
Control Module Processor
ECM fault
EEPROM check..failed
P0627
Fuel Pump “A” Control Circuit
/Open
• Internal error fuel pump
control unit
• Feedback from fuel pump
control unit Pump blocked
short circuit to battery +,
ground or open circuit
182
Audi Q7 Quick Reference Specification Book
•
September 2013
DTC
Error Message
Malfunction Criteria and
Threshold Value
Throttle Actuator Control
Range/Performance Bank 1
Functional check: close
movement
• Open to 15° > 1.275 s
• Then close to ref. point > 1.28
s
• Gradient < 7° per second
Functional check open
movement
• Close to 1.99° > 1.275 s
• Then open to ref. point > 1.28
s
• Gradient < 7° per second
Signal range check @
mechanical stop low
• TPS 1 signal voltage out-off
range 0.208 - 0.852 V
or
• TPS 2 signal voltage out off
range 4.158 - 4.802 V
P0641
Sensor Reference Voltage A
Circuit/Open
Signal voltage deviation ± 0.3 V
P0642
Sensor Reference Voltage A
Circuit Low
Signal voltage, < 4.62 V
P0643
Sensor Reference Voltage A
Circuit High
5 V supply voltage > 5.44 V
P0651
Sensor Reference Voltage B
Circuit/Open
Signal voltage, deviation
+/- 0.3 V
P0652
Sensor Reference Voltage B
Circuit Low
Signal voltage, < 4.62 V
P0653
Sensor Reference Voltage B
Circuit High
5 V supply voltage > 5.44 V
P0657
Actuator Supply Voltage A
Circuit / Open
Signal voltage, < 2.9 to 3.2 V
P0658
Actuator Supply Voltage A
Circuit Low
Signal voltage, < 1.95 to 2.2 V
P0659
Actuator Supply Voltage "A"
Circuit High
Signal current > 1.2 A
P0685
ECM / PCM Power Relay
Control Circuit/Open
• Signal voltage, 2.6-3.7 V
• Sense circuit voltage, > 6 V
P0686
ECM / PCM Power Relay
Control Circuit Low
Sense circuit voltage, > 6.0 V
P0687
ECM / PCM Power Relay
Control Circuit High
Sense circuit voltage, < 5.0 V
Audi Q7 Quick Reference Specification Book
•
September 2013
DTC Chart
P0638
183
DTC
Error Message
Malfunction Criteria and
Threshold Value
P0688
ECM / PCM Power Relay
Sense Circuit
• Sense voltage, < 3.0 V
• Difference sense circuit
voltage with camshaft actuator
commanded off and on
> 2.5 V
• Battery voltage > 3 V
P0697
Sensor Reference Voltage C
Circuit/Open
Signal voltage deviation ± 0.3 V
P0698
Sensor Reference Voltage C
Circuit Low
Signal voltage, < 4.6-5 V
P0699
Sensor Reference Voltage C
Circuit High
5 V supply voltage
> 4.99 - 5.41 V
U0001
High Speed CAN
Communication Bus
CAN message, no feedback
U0002
High Speed CAN
Communication Bus
Global time out, receiving no
messages
U0100
Lost Communication with
ECM/PCM A
• Failure of all CAN engine
messages, time out
> 490 mSec.
• Failure of all CAN engine
messages, but not all CAN
messages, time out
> 1010 mSec.
U0101
Lost Communication with TCM No message received from
TCM
U0121
No CAN communication with
TCU, time-out
U0140
CAN communication with
BCM 1
CAN message no message
U0146
CAN gateway A
CAN communication with
gateway, implausible message
U0155
Communication with ICL
No CAN communication with
IPC, time-out
U0302
Software Incompatibility with
Transmission Control Module
Manual transmission vehicle,
ECM coded as AT vehicle.
U0322
Communication with Body
Control Module
Ambient temperature value
(module not encoded for
ambient temperature sensor)
FDh -
U0323
CAN: Instrument Cluster Audi
Only
Ambient temp value module
not encoded for ambient temp
sensor, 00h
184
Audi Q7 Quick Reference Specification Book
•
September 2013
DTC
Error Message
Malfunction Criteria and
Threshold Value
CAN communication with TCM Invalid data received from TCM
• Implausible message
U0404
Invalid Data Received from
Gear Shift Control Module
• If the value of message
counter is permanent,
constant, or chainge exceeds
a threshold, increment an
event counter
• Maximum change of message
counter > 5
U0415
CAN Link to Speed Sensor
Only A6
• Out of range: receiving fault
value 203.5 mph
• Out of range: receiving fault
value > 202.81 mph
• Out of range: receiving fault
value < 1.24 mph
U0415
CAN Link to Speed Sensor
Only S4
• Out of range: receiving fault
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TSB/Document ID: QRSB Audi Q7
Replacement Service Bulletin Number:
MFR Communication Date: 2013-09-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
MFR Component System:
MFR Component Subsystem:
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