NHTSA ID Number: 10203510
Manufacturer Communication Number: QRSB AUDI A6 S6
TSB/Document Date: 2021-11-15
Summary
Quick reference specification book.
Reducing Agent Tank Heater
Short Circuit to Voltage
Signal voltage > 3.27 V
P146F
Heater 2 for Reducing Agent
Short Circuit to Voltage
Signal voltage > 4.70 V
P148F
Exhaust Gas Recirculation
Cooler Switch-Over Valve 2
Electrical Malfunction
Diagnostic signal from power
stage < 2.97 V
P1499
Exhaust Gas Recirculation
Cooler Switch-over Valve 2
Open Circuit/Short Circuit To
Ground
Diagnostic signal from power
stage > 4.5 V
Audi
A6/S6 Quick Reference Specification Book
•
September 2013
341
DTC Chart
DTC
DTC
Error Message
Malfunction Criteria and
Threshold Value
P240F
EGR Slow Response
• Calculated characteristically
value: Negative gradients of
target air mass flow > 35 [-]
or
• Calculated characteristically
value: Positive gradients of
Target air mass flow ≥ 30 [-]
P242A
Exhaust Gas Temperature
Sensor Circuit Bank 1 Sensor
3
Signal voltage > 2.61 V
P242B
Exhaust Gas Temperature
Sensor Circuit Bank 1 Sensor
3 Range/Performance
• Temperature difference to EGR
temp, T3, T4, T5, T6 > 40 °K
or
• Mean value of modeled measured T5 > 100 °K
P242C
Exhaust Gas Temperature
Sensor Circuit Low Bank 1
Sensor 3
Signal voltage < 0.68 V
P2425
Exhaust Gas Recirculation
Cooling Valve Control Circuit
Open
Diagnostic signal from power
stage < 2.97 V
P2426
Exhaust Gas Recirculation
Cooling Valve Control Circuit
Grounded
Diagnostic signal from power
stage < 2.97 V
P2427
Exhaust Gas Recirculation
Cooling Valve Control Circuit
Shorted Battery Voltage
Diagnostic signal from power
stage > 2.2 A
P244C
Exhaust Temperature Too
Low For Particulate Filter
Regeneration Bank 1
Time to closed loop 120 - 300
Sec.
P245B
Exhaust Gas Recirculation
Cooler Bypass Control Circuit
Range/Performance
• Positive difference between
measured and target
temperature too high = 10.0 70.0 [K]
or
• Negative difference between
measured and target
temperature too low = -12.0
-7.0 [K]
P2452
Diesel Particulate Filter
Differential Pressure Sensor
Circuit
Sensor voltage > 4.9 V
342
Audi A6/S6 Quick Reference Specification Book
•
September 2013
Error Message
Malfunction Criteria and
Threshold Value
P2453
Diesel Particulate Filter
Differential Pressure Sensor
Circuit Range/Performance
Pressure drop > 3 kPa or < -3
kPa
P2454
Diesel Particulate Filter
Differential Pressure Sensor
Circuit Low
Sensor voltage < 0.2 V
P2458
Diesel Particulate Filter
Regeneration Duration
Time of regen duration > 3600
Sec.
P2459
Diesel Particulate Filter
Regeneration Frequency
Measured soot mass > f
(volumetric flow rate) grams
P246E
Exhaust Gas Temperature
Sensor Circuit Bank 1 Sensor
4
Signal voltage > 1652 mV
P246F
Exhaust Gas Temperature
Sensor Circuit Bank 1 Sensor
4 Range/Performance
• Temperature difference to EGR
temp, T3, T4, T5, T6 > 40 °K
or
• Mean value of modeled measured T5 > 100 °K
P2463
Diesel Particulate Filter - Soot
Accumulation
Calculated particulate matter
trap loading > 40 g
P247A
Exhaust Gas Temperature Out Control deviation (T5) > 200 K
of Range Bank 1 Sensor 3
or < -100 K
P2470
Exhaust Gas Temperature
Sensor Circuit Low Bank 1
Sensor 4
Signal voltage < 330 mV
P24AE
PM Sensor Functional check /
Shorted or Open
• Current (IDE) @ measurement
1 < 2 µA
• Difference between current
(IDE) measurement 1 and 2
or
• Signal voltage positive
connection (IDE) > 4.7 [V]
• Signal voltage positive
connection (IDE) < 0.3 [V]
P24AF
PM Sensor Monitoring,
Rationality Check
• Signal current (IDE) > 5 µA
or
•Accumulated change in heater
voltage < = 0.40 V
P24B1
PM Sensor Circuit Shorted or
open
• Signal voltage negative
connection (IDE) > 4.1 [V]
• Signal voltage negative
connection (IDE) = 0.0 [V]
Audi A6/S6 Quick Reference Specification Book
•
September 2013
343
DTC Chart
DTC
DTC
Error Message
Malfunction Criteria and
Threshold Value
P24B3
PM Sensor Heater functional
check
• Heater Coil resistance > 1.06
- 2.31 Ω
• eater Coil resistance < 2.94 5.13 Ω
P24B5
PM Sensor Heater Short to
Ground
• Heating Current < 1.0 A
or
• Heating Current > 15.0 A
P24B6
PM Sensor Heater Short to
Battery Voltage
Heating Current ≥ 0.2 A
P24C7
PM Sensor Plausibility Check
Measured sensor temperature
- mean value of modelled
temperature < - 100 °K
P24D0
PM Sensor Monitoring, Range
/ Performance Check
Signal range check low:
difference between measured
PM Sensor supply wire voltage
and battery voltage (ECM):
• Value > 1.90 [V]
or
• Value > 2.60 [V]
or
• Value > 3.00 [V]
Signal Range Check High:
difference between measured
battery voltage (ECM) and
Sensor supply wire voltage:
• Value > 3.00 [V]
or
• Value > 2.10 [V]
or
• Value > 1.10 [V]
Speed and Idle Control
DTC
Error Message
Malfunction Criteria and
Threshold Value
P050A
Cold Start Idle Air Control
System Performance
Idle speed control deviation
more than 10% under or 10%
above desired idle speed
P050E
SCR Catalyst, Temperature,
Plausibility Check
Exhaust gas temperature
< 150 °C
P0501
Vehicle Speed Sensor
Performance
Vehicle speed < 4 km/h
P0502
Vehicle Speed Sensor Circuit
Low
Sensor signal failure
344
Audi A6/S6 Quick Reference Specification Book
•
September 2013
DTC
Error Message
Malfunction Criteria and
Threshold Value
P0506
Idle Control System RPM
Lower than Expected
Control deviation < 10%
P0507
Idle Control System RPM
Higher than Expected
Control deviation > 10%
P052F
Glow Plug Control Module
System Voltage
Error message from Glow
Control Unit.
P0544
Signal voltage > 2.61 V
Exhaust Gas Temperature
Sensor Circuit Short to Battery
Voltage or Open
P0545
Exhaust Gas Temperature
Sensor Circuit Low
Signal voltage < 0.68 V
Control Module and Output Signals
Error Message
Malfunction Criteria and
Threshold Value
P06BA
Cylinder 2 Glow Plug Circuit
Range/Performance
• Glow plug resistance (between
4 - 9 Sec.)
< 0.3 ohm
• Glow plug resistance (between
9 - 14 Sec.)
< 0.4 ohm
• Glow plug resistance (after 14
Sec.) < 0.5 ohm
• Glow plug resistance anytime
> 1.2 ohm
P06BB
Cylinder 3 Glow Plug Circuit
Range/Performance
• Glow plug resistance (between
4 - 9 Sec.)
< 0.3 ohm
• Glow plug resistance (between
9 - 14 Sec.)
< 0.4 ohm
• Glow plug resistance (after 14
Sec.) < 0.5 ohm
• Glow plug resistance anytime
> 1.2 ohm
Audi A6/S6 Quick Reference Specification Book
•
September 2013
345
DTC Chart
DTC
DTC
Error Message
Malfunction Criteria and
Threshold Value
P06BC
Cylinder 4 Glow Plug Circuit
Range/Performance
• Glow plug resistance (between
4 - 9 Sec.)
< 0.3 ohm
• Glow plug resistance (between
9 - 14 Sec.)
< 0.4 ohm
• Glow plug resistance (after 14
Sec.) < 0.5 ohm
• Glow plug resistance anytime
> 1.2 ohm
P06BD
Cylinder 5 Glow Plug Circuit
Range/Performance
• Glow plug resistance (between
4 - 9 Sec.)
< 0.3 ohm
• Glow plug resistance (between
9 - 14 Sec.)
< 0.4 ohm
• Glow plug resistance (after 14
Sec.) < 0.5 ohm
• Glow plug resistance anytime
> 1.2 ohm
P06BE
Cylinder 6 Glow Plug Circuit
Range/Performance
• Glow plug resistance (between
4 - 9 Sec.)
< 0.3 ohm
• Glow plug resistance (between
9 - 14 Sec.)
< 0.4 ohm
• Glow plug resistance (after 14
Sec.) < 0.5 ohm
• Glow plug resistance anytime
> 1.2 ohm
P06B0
Reducing Agent Metering
Sensor supply voltage < 0.2
System Control Module -J880- >... 5.3 V
detects short circuit of supply
voltage
P06B9
Cylinder 1 Glow Plug Circuit
Range/Performance
346
• Glow plug resistance (between
4 - 9 Sec.)
< 0.3 ohm
• Glow plug resistance (between
9 - 14 Sec.)
< 0.4 ohm
• Glow plug resistance (after 14
Sec.) < 0.5 ohm
• Glow plug resistance anytime
> 1.2 ohm
Audi A6/S6 Quick Reference Specification Book
•
September 2013
DTC
Error Message
Malfunction Criteria and
Threshold Value
Glow Plug Control Module
Performance
Calculated ground offset
≥ 1.75 V or ≤ -1.75 V
P06FE
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TSB/Document ID: QRSB AUDI A6 S6
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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