NHTSA ID Number: 10203512
Manufacturer Communication Number: QRSB Audi
A8 A8L
TSB/Document Date: 2021-11-15
Summary
Quick reference specification book.
P2273
O2 Sensor Signal Stuck Rich;
Bank 2 Sensor 2
• O2S signal rear not oscillating
at reference > 0.64 V
and
• Enrichment after stuck rich
15%
or
• Sensor voltage (after fuel cut
off) ≥ 0.15V
and
• Number of checks ≥ 1.0
P2279
Intake Air System Leak
• Threshold to detect a defective
system > 1.70
and
• Ratio of the tie “System
defective” during the
measurem. window to
the whole duration of the
measurem. window > 0.80
P2293
Fuel Pressure Regulator 2
Performance
Difference between actual
pressure - Target pressure
< 1.50 & > 1.50 MPa
P2294
Fuel Pressure Regulator 2
Control Circuit
• Signal voltage 1.40 - 3.20 V
or
• Signal pattern incorrect
332 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Error Message
Malfunction Criteria and
Threshold Value
P2295
Fuel Pressure Regulator 2
Control Circuit Low
Signal voltage 1.40 - 3.40 V
P2296
Fuel Pressure Regulator 2
Control Circuit High
Signal voltage > 3.20 V
Ignition System
DTC
Error Message
Malfunction Criteria and
Threshold Value
P2300
Ignition Coil “A” Primary
Control Circuit Low
Signal current > 24.0 mA
P2301
Ignition Coil “A” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2303
Ignition Coil “B” Primary
Control Circuit Low
Signal current > 24.0 mA
P2304
Ignition Coil “B” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2306
Ignition Coil “C” Primary
Control Circuit Low
Signal current > 24.0 mA
P2307
Ignition Coil “C” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2309
Ignition Coil “D” Primary
Control Circuit Low
Signal current > 24.0 mA
P2310
Ignition Coil “D” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2312
Ignition Coil “E” Primary
Control Circuit Low
Signal current > 24.0 mA
P2313
Ignition Coil “E” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2315
Ignition Coil “F” Primary
Control Circuit Low
Signal current > 24.0 mA
P2316
Ignition Coil “F” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2318
Ignition Coil “G” Primary
Control Circuit Low
Signal current > 24.0 mA
P2319
Ignition Coil “G” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2321
Ignition Coil “H” Primary
Control Circuit Low
Signal current > 24.0 mA
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 333
DTC Chart
DTC
DTC
Error Message
Malfunction Criteria and
Threshold Value
P2322
Ignition Coil “H” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2324
Ignition Coil “I” Primary
Control Circuit Low
Signal current > 24.0 mA
P2325
Ignition Coil “I” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2327
Ignition Coil “J” Primary
Control Circuit Low
Signal current > 24.0 mA
P2328
Ignition Coil “J” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2330
Ignition Coil “K” Primary
Control Circuit Low
Signal current > 24.0 mA
P2331
Ignition Coil “K” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
P2333
Ignition Coil “L” Primary
Control Circuit Low
Signal current > 24.0 mA
P2334
Ignition Coil “L” Primary
Control Circuit High
Signal voltage > 5.1 - 7.0 V
Additional Emissions Regulations
DTC
Error Message
Malfunction Criteria and
Threshold Value
P2414
O2 Sensor Exhaust Sample
Error Bank 1, Sensor 1
• Threshold 1 - Signal voltage
2.71 - 6.00 V
• Threshold 2 - Signal voltage
2.05 - 3.06 V
P2415
02 Sensor Exhaust Sample
Error, Bank 2 Sensor 1
• Threshold 1 - Signal voltage
2.71 - 6.00 V
• Threshold 2 - Signal voltage
2.05 - 3.06 V
P2422
Evaporative Emission System
Vent Valve Stuck Closed
Time for pressure drop during
2nd leak check < 1.45 Sec.
P2431
Secondary Air Injection
System Air Flow/Pressure
Sensor Circuit Range/
Performance
Difference between AIR
pressure and ambient pressure
< -6.0; > 6.0 kPa)
P2432
Secondary Air Injection
System Air Flow/Pressure
Bank 1 Sensor Circuit Low
Signal voltage < 0.50 V
334 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Error Message
Malfunction Criteria and
Threshold Value
P2433
Secondary Air Injection
System Air Flow/Pressure
Sensor Circuit High
Signal voltage > 4.50 V
P2436
Secondary Air Injection
System Air Flow/Pressure
Bank 2 Sensor Circuit Range/
Performance
Difference between AIR
pressure and ambient pressure
< -6.0; > 6.0 kPa)
P2437
Secondary Air Injection
System Air Flow/Pressure
Bank 2 Sensor Circuit Low
Signal voltage < 0.50 V
P2438
Secondary Air Injection
System Air Flow/Pressure
Bank 2 Sensor Circuit High
Signal voltage > 4.50 V
P2440
Secondary Air Injection
System Switching Valve Stuck
Open Bank 1
Deviation of raw pressure signal
from filter signal:
• Maximum value > 0.38 kPa
• Minimum value < -2.5 kPa
• Mean value > 0.15 kPa
P2442
Secondary Air Injection
System Switching Valve Stuck
Open Bank 2
Deviation of raw pressure signal
from filter signal:
• Maximum value > 0.38 kPa
• Minimum value < -2.5 kPa
• Mean value > 0.15 kPa
P2539
Low Pressure Fuel System
Sensor Circuit
Signal voltage > 4.90 V
P2541
Low Pressure Fuel System
Sensor Circuit Low Input
Signal voltage < 0.10 V
P2626
O2 Sensor Pumping Current
- Trim Circuit/Open Bank 1 Sensor 1
O2S signal front > 4.8 V
P2629
O2 Sensor Pumping Current
Trim Circuit/Open Bank 2
Sensor 1
O2S signal front > 4.8 V
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 335
DTC Chart
DTC
DTC Chart
Engine Codes - 3.0L TDI CPNA
Fuel and Air Mixture,
Additional Emissions Regulations
DTC
Error Message
Malfunction Criteria and
Threshold Value
P0045
Turbocharger Boost Control
Solenoid Circuit Open
Diagnostic signal from power
stage > 0.8 V (Out 1) and
< 2 V (Out 2)
P0047
Turbocharger Boost Control
Solenoid Circuit Grounded
Diagnostic signal from power
stage > 8 - 18 A
P0048
Turbocharger Boost Control
Solenoid Circuit High
Diagnostic signal from power
stage > 8 - 18 A
P0071
Ambient Air Temperature
Sensor Circuit Range/
Performance
• Temperature difference to
ECT, ECT 2> 40° K
• Temperature difference to T2,
and FTS > 45° K
• Error bit = set
P0072
Ambient Air Temperature
Sensor Circuit Low
AAT < -40° C
P0087
Fuel Rail/System Pressure Too Low
• Positive control deviation step
1 > 17000.00 - 50000.00 kPa
• Positive control deviation step
2 > 15000.00 kPa
• Minimum rail pressure < 0.00
- 12500.00 kPa
P0088
Fuel Rail/System Pressure Too High
Max Rail Pressure
> 215000 kPa
P0090
Fuel Pressure Regulator
Control Circuit Open
Signal Voltage < 4.7 V
P0091
Fuel Pressure Regulator
Control Circuit Grounded
Signal Voltage < 2.97 V
P0092
Fuel Pressure Regulator
Control Circuit Shorted to
Battery Voltage
Signal curent ˃ 3.0 A
P00AF
Turbocharger Boost Pressure
Actuator Control functional
check
Stuck open
• Control deviation > 8.00 [%]
or
• Control deviation > 8.00 [%]
• Actual position ≤ 30.00 [%]
336 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Error Message
Malfunction Criteria and
Threshold Value
P00C6
Fuel Rail Pressure System
Fuel Rail, high pressure value
< 12000 - 23000 kPa
P0101
Mass or Volume Air Flow
Circuit Range/Performance
Ratio of modeled and
measured air mass flow > 1.15
or < 0.85
P0102
Mass or Volume Air Flow
Circuit Low Input
MAF sensor signal (< 0.083
mSec.) > 900 kg/hr
P0103
Mass or Volume Air Flow
Circuit High Input
MAF sensor signal (> 4.5
mSec.) ≤ 0 kg/hr
P0104
Mass or Volume Air Flow
Circuit Intermittent
MAF sensor signal period = not
measurable
P0111
Intake Air Temperature Circuit
Performance
• Temperature difference to
ECT, ECT 2 > 35 °K
• Temperature difference to
FTS > 40 °K
• Temperature difference to T1
> 45 °K
P0112
Intake Air Temperature Circuit
Low Input
Signal voltage < 162 mV
P0113
Intake Air Temperature Circuit
High Input
Signal voltage > 3255 mV
P0116
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TSB/Document ID: QRSB Audi A8 A8L
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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