NHTSA ID Number: 10203510
Manufacturer Communication Number: QRSB AUDI
A6 S6
TSB/Document Date: 2021-11-15
Summary
Quick reference specification book.
P2138
Pedal Position Sensor D/E
Circuit Voltage Correlation
Signal voltage sensor 1 vs.
sensor 2 > 143 - 260 mV
P214E
Reducing Agent Metering
Current Over-Temperature
System Control Module -J880- diagnostic signal from output
Internal Temperature Too High driver
• Power stage temperature
> 140 °C
P214F
Reducing Agent Metering
System Control Module -J880Internal Pump Temperature
Too High
P2146
Fuel Injector Group "A" Supply Diagnostic signal from power
Voltage Circuit Open
stage = internal signal
P2149/
P2152
Fuel Injector Group "C" Supply Diagnostic signal from power
Voltage Circuit/Open
stage = internal signal
P2181
Engine Coolant Temperature
Sensor on Radiator Outlet
Circuit Rationality Check
Deviation between target and
measured ECT < - 7.5 [K]
P2183
Engine Coolant Temperature
Sensor on Radiator Outlet
Circuit Cross Check
ECT on radiator outlet vs IAT or
AAT or FTS at start up > 35 K
P2184
Engine Coolant Temperature
Sensor on Radiator Outlet
Circuit Grounded
Signal voltage < 162 mV
336
Current Over-Temperature
diagnostic signal from output
driver
• Power stage temperature
> 140 °C
Audi A6/S6 Quick Reference Specification Book
•
September 2013
Error Message
Malfunction Criteria and
Threshold Value
P2185
Engine Coolant Temperature
Sensor On Radiator Outlet
Circuit Short to Battery
Voltage
Signal voltage > 3255 mV
P2195
O2 Sensor Signal Stuck Lean
(Bank 1 Sensor 1)
• Measured oxygen
concentration @ fuel cutoff
> 25.6%
or
• Measured oxygen
concentration @ part load
> (calculated) 11%
P2196
2 Sensor Signal Stuck Rich
Bank 1 Sensor 1
Measured oxygen concentration
@ fuel cutoff > 14.7%
P220A
NOx Sensor Front Circuit
Supply Voltage
Sensor supply voltage > 1.5 or
< 12 V
P220B
Ox Sensor Rear Supply
Voltage Circuit
Sensor supply voltage > 1.5
P2200
NOx Sensor Front Circuit
Failure
NOx sensor signal ratio of
validity ≥ 0.50 [-]
P2201
NOx Sensor Front Circuit
Range / Performance
• NOx 40 - 70%, time > 5 Sec.
or 40% value not reached
within 7 Sec.
• Ratio > 3 or < -0.75
• Average NOx Offset value > 50
or < -30 ppm
P2202
NOx Sensor Front Circuit Low
NOx Sensor Front Circuit Low
P2203
NOx Sensor Front Circuit High NOx value > 1655 ppm
P2209
NOx Sensor Front Rationality
Check
P2237
O2 Sensor Positive Current
Measured oxygen concentration
Control Circuit (Bank 1 Sensor < 0.005
1) Open
P2243
O2 Sensor Reference Voltage
Circuit Bank 1 Sensor 1 Open
• O2S internal resistance > 3 V
• Oxygen signal < -1.3 V or >
1.5 V
P2251
O2 Sensor Negative Current
Control Circuit Bank 1 Sensor
1 Open
O2S internal resistance voltage
>3V
P226C
Turbocharger Boost Control
"A" Slow Response
Boost difference between target
and measured < -6976[J]
P2279
Turbocharger Boost Pressure
Intake Air System Leak
Ratio of measured and modeled
mass air flow = 0.45 - 0.80[-]
NOx control active time since
dew point exceeded > 180
Audi A6/S6 Quick Reference Specification Book
•
September 2013
337
DTC Chart
DTC
DTC
Error Message
Malfunction Criteria and
Threshold Value
P229E
Ox Sensor Rear Circuit Short
or Open
• Message From NOx Sensor =
Failure
or
• NOx sensor status ratio of
validity ≥ 0.5[-]
P229F
NOx Sensor Rear Circuit
Range /Performance
• Average NOx Offset Value
> 50 ppm
• Number of checks = 2[-]
or
• Average NOx Offset Value
< - 30 ppm
• Number of checks = 2[-]
or
• Measured oxygen
concentration compared
with calculated oxygen
concentration deviation @ part
load > 5.3%
P2294
Fuel Pressure Metering Valve
Control Circuit Open
Signal Voltage < 4.7 V
P2295
Fuel Pressure Metering Valve
Control Circuit Grounded
Signal Voltage < 2.97 V
P2296
Fuel Pressure Metering Valve Signal Current > 3.0 A
Control Circuit Short to Battery
Voltage
P22A0
NOx Sensor Rear Circuit Low
NOx value < -105 ppm
P22A1
NOx Sensor Rear Circuit High
NOx value > 1655 ppm
P22A7
Ox Sensor Rear Rationality
Check
NOx control active time since
dew point exceeded >180 s
Ignition System
DTC
P0300
338
Error Message
Random Misfire Detected
Malfunction Criteria and
Threshold Value
• Rise in engine speed after fuel
injection calculated based on
values from last two engine
revolutions
• Error threshold 82%
misfire over 440 crankshaft
revolutions
Audi A6/S6 Quick Reference Specification Book
•
September 2013
Error Message
Malfunction Criteria and
Threshold Value
P0301
Cylinder 1 Misfire Detected
• Rise in engine speed after fuel
injection calculated based on
values from last two engine
revolutions
• Error threshold 82%
misfire over 440 crankshaft
revolutions
P0302
Cylinder 2 Misfire Detected
• Rise in engine speed after fuel
injection calculated based on
values from last two engine
revolutions
• Error threshold 82%
misfire over 440 crankshaft
revolutions
P0303
Cylinder 3 Misfire Detected
• Rise in engine speed after fuel
injection calculated based on
values from last two engine
revolutions
• Error threshold 82%
misfire over 440 crankshaft
revolutions
P0304
Cylinder 4 Misfire Detected
• Rise in engine speed after fuel
injection calculated based on
values from last two engine
revolutions
• Error threshold 82%
misfire over 440 crankshaft
revolutions
P0305
Cylinder 5 Misfire Detected
• Rise in engine speed after fuel
injection calculated based on
values from last two engine
revolutions
• Error threshold 82%
misfire over 440 crankshaft
revolutions
P0306
Cylinder 6 Misfire Detected
• Rise in engine speed after fuel
injection calculated based on
values from last two engine
revolutions
• Error threshold 82%
misfire over 440 crankshaft
revolutions
Audi A6/S6 Quick Reference Specification Book
•
September 2013
339
DTC Chart
DTC
DTC
Error Message
Malfunction Criteria and
Threshold Value
P0321
Engine Speed Input Circuit
Range/Performance
• Counted teeth vs. reference
> 200
• Monitoring reference gap
failure
P0322
Engine Speed Input Circuit No
Signal
• Camshaft signal > 10
• Engine speed = no signal
Additional Exhaust Regulation
DTC
Error Message
Malfunction Criteria and
Threshold Value
P04DD
Cold Start EGR Insufficient
Flow Detected
Control deviation < f(engine
speed, injection quantity, target
air mass flow)
P04DE
Cold Start EGR Excessive
Flow Detected
Ratio of modeled and measured
air mass flow > f(turbo charger
position)
P040B
Exhaust Gas Recirculation
Temperature Sensor Circuit
Range/Performance
Measured sensor temperature
- mean value of modelled
temperature
P040C
Exhaust Gas Recirculation
Temperature Sensor Circuit
Low
Signal voltage < 0.68 V
P040D
Exhaust Gas Recirculation
Temperature Sensor Circuit
High
Signal voltage > 2.61 V
P0401
Exhaust Gas Recirculation
Insufficient Flow Detected
Control deviation < f (engine
speed, injection quantity, target
air mass flow)
P0402
Exhaust Gas Recirculation
Excessive Flow Detected
Ratio of modeled and measured
air mass flow > 1.3[-]
340
Audi A6/S6 Quick Reference Specification Book
•
September 2013
Error Message
Malfunction Criteria and
Threshold Value
P0403
Exhaust Gas Recirculation
Actuator Circuit Functional
Check
• Control deviation > 10.00 [%]
or
• Control deviation < -10.00 [%]
or
• Actual position ≤17.00 [%]
• Control deviation > 10.00 [%]
or
• Control deviation < -10.00 [%]
• Actual position > 17.00 [%]
Open circuit:
• Control deviation < -10.00 [%]
Short to ground:
• Signal current > 8 - 18 [A]
Short to battery voltage
• Signal current > 8 - 18 [A]
P0404
Exhaust Gas Recirculation
Control Circuit Range/
Performance
• Control deviation > 10%
• Actual position > 17%
P0405
Exhaust Gas Recirculation
Sensor Circuit Low
Position sensor signal < 0.25 V
P0406
Exhaust Gas Recirculation
Sensor Circuit High
Position sensor signal ≥ 4.75 V
P0420
Catalyst System Bank 1
Efficiency Below Threshold
Ratio of measured and modeled
heat < 0.3
P046C
Exhaust Gas Recirculation
Sensor Circuit Range/
Performance
Position sensor signal > 1.05 V
P1419
Exhaust Gas Recirculation
Cooler Switch-over Valve 2
Short circuit to Voltage
Diagnostic signal from power
stage > 1.5 A
P146D
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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:
Previous TSB | Next TSB |
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