NHTSA ID Number: 10203512
Manufacturer Communication Number: QRSB Audi A8 A8L
TSB/Document Date: 2021-11-15
Summary
Quick reference specification book.
Delta lambda of 2nd lambda
control loop > 0.070
P2198
O2 Sensor Signal Stuck Rich
Bank 2 Sensor 1
Delta lambda of 2nd lambda
control loop < 0.070
P2227
Barometric Sensor Rationality
Check
Pressure difference in cross
check between boost pressure
sensor 1/2; inlet charger
pressure and ambient pressure
sensor >7 kPa
278 Audi
A8/A8L/S8 Quick Reference Specification Book • September 2013
Error Message
Malfunction Criteria and
Threshold Value
P2231
O2 Sensor Signal Circuit
Shorted to Heater Circuit
• Delta O2S signal front
> 0.2 - 0.498 V
• Elapsed time since last O2S
< 0.05 Sec
P2234
O2 Sensor Signal Circuit
Shorted to Heater Circuit
• Delta O2S signal front
> 0.2 - 0.498 V
• Elapsed time since last O2S
< 0.05 Sec
P2237
O2 Sensor Positive Current
Control Circuit Bank 1 Sensor
1 Open
• O2S signal front 1.46 - 1.52 V
and
• Delta lambda controller
> | 0.10 |
P2240
O2 Sensor Positive Current
Control Circuit Bank 2 Sensor
1 Open
• O2S signal front 1.46 - 1.52 V
and
• Delta lambda controller
> | 0.10 |
P2243
O2 Sensor Reference Voltage
Circuit Bank 1 Sensor 1 Open
• O2S signal front > 3.25 V
• and
• Internal resistance > 950Ω
• O2S signal front < 0.20 V
and
• Internal resistance > 950Ω
P2247
O2 Sensor Reference Voltage
Circuit Bank 2 Sensor 1 Open
• O2S signal front > 3.25 V
and
• Internal resistance > 950Ω
• O2S signal front < 0.20 V
and
• Internal resistance > 950Ω
P2251
O2 Sensor Signal Open
Circuit - Bank 1, Sensor 1
• O2S signal front 1.44 - 1.53 V
and
• Internal resistance > 950 Ω
P2254
O2 Sensor Negative Current
Control Circuit Bank 2 Sensor
1 Open
• O2S signal front 1.44 - 1.53 V
and
• Internal resistance > 950 Ω
P2257
Secondary air Injection
System Control "A" Circuit
Low
Signal voltage 0.00 - 3.26 V
P2258
Secondary Air Injection
System Control "A" Circuit
High
Signal current 0.60 - 2.40 A
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 279
DTC Chart
DTC
DTC
Error Message
Malfunction Criteria and
Threshold Value
P2270
O2 Sensor Signal Stuck Lean
Bank 1 Sensor 2
• O2S signal rear not oscillating
at reference < 0.62 - 0.68 V
and
• Enrichment after stuck lean
25.00%
P2271
O2 Sensor Signal Stuck Rich
Bank 1 Sensor 2
• Sensor voltage of ≥ 0.18 V
• After oxygen mass
> 3300 - 400 mg
• (after fuel cut off) and number
of checks ≥1.0
P2272
O2 Sensor Signal Stuck Lean
Bank 2 Sensor 2
• O2S signal rear not oscillating
at reference < 0.62 - 0.68 V
and
• Enrichment after stuck lean
25.00%
P2273
O2 Sensor Signal Stuck Rich
Bank 2 Sensor 2
• Sensor voltage of ≥ 0.18 V
• After oxygen mass
> 3300 - 400 mg
• (after fuel cut off) and number
of checks ≥1.0
P2279
MAP/MAF - Throttle Position
Correlation
• Offset value throttle mass flow
> 17.00 kg/h
and
• Correction factor > 0.97
P2293
Fuel Pressure Regulator 2
Performance
• Difference between target
pressure - actual pressure
> 1.30 mPa
P2294
Fuel Pressure Regulator 2
Control Circuit
Open circuit
• Signal voltage 1.40 - 3.20 V
Rationality check
• Signal pattern incorrect
P2295
Fuel Pressure Regulator 2
Control Circuit Low Short to
Ground
Signal voltage < 1.40 - 3.20 V
P2296
Fuel Pressure Regulator 2
Control Circuit High
Short to battery plus signal
voltage > 3.20 V
Ignition System
DTC
Error Message
Malfunction Criteria and
Threshold Value
P2300
Ignition Coil “A” Primary
Control Circuit Low
Short to ground signal current
> 24.0 mA
280 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Error Message
Malfunction Criteria and
Threshold Value
P2301
Ignition Coil “A” Primary
Control Circuit High
Short to battery plus signal
voltage > 5.1 - 7.0 V
P2303
Ignition Coil “B” Primary
Control Circuit Low
Short to ground signal current
> 24.0 mA
P2304
Ignition Coil “B” Primary
Control Circuit High
Short to battery plus signal
voltage > 5.1 - 7.0 V
P2306
Ignition Coil “C” Primary
Control Circuit Low
Short to ground signal current
> 24.0 mA
P2307
Ignition Coil “C” Primary
Control Circuit High
Short to battery plus signal
voltage > 5.1 - 7.0 V
P2309
Ignition Coil “D” Primary
Control Circuit Low
Short to ground signal current
> 24.0 mA
P2310
Ignition Coil “D” Primary
Control Circuit High
Short to battery plus signal
voltage > 5.1 - 7.0 V
P2312
Ignition Coil “E” Primary
Control Circuit Low
Short to ground signal current
> 24.0 mA
P2313
Ignition Coil “E” Primary
Control Circuit High
Short to battery plus signal
voltage > 5.1 - 7.0 V
P2315
Ignition Coil “F” Primary
Control Circuit Low
Short to ground signal current
> 24.0 mA
P2316
Ignition Coil “F” Primary
Control Circuit High
Short to battery plus signal
voltage > 5.1 - 7.0 V
P2318
Ignition Coil “G” Primary
Control Circuit Low
Short to ground signal current
> 24.0 mA
P2319
Ignition Coil “G” Primary
Control Circuit High
Short to battery plus signal
voltage > 5.1 - 7.0 V
P2321
Ignition Coil “H” Primary
Control Circuit Low
Short to ground signal current
> 24.0 mA
P2322
Ignition Coil “H” Primary
Control Circuit High
Short to battery plus signal
voltage > 5.1 - 7.0 V
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 281
DTC Chart
DTC
Additional Emissions Regulations
DTC
Error Message
Malfunction Criteria and
Threshold Value
P2414
O2 Sensor signal range check
- Bank 1, Bank 2
• Threshold 1 - Signal voltage
2.71 - 6.00 V
• Threshold 2 - Depending on
gain factor, that actual is used
for sensor characteristic, the
threshold is signal voltage
2.05 - 3.06 V
P2415
O2 Sensor Exhaust Sample
Error, Bank 2 Sensor 1
• Threshold 1 - Signal voltage
2.71 - 6.00 V
• Threshold 2 - Depending on
gain factor, that actual is used
for sensor characteristic, the
threshold is signal voltage
2.05 - 3.06 V
P2431
Secondary Air Injection
System Air Flow/Pressure
Bank 1 Sensor Circuit Range/
Performance
Difference between AIR
pressure, AMP, and MAP -6.0 6.00 kPa
P2432
Secondary Air Injection
System Air Flow/Pressure
Bank 1 Sensor Circuit Low
Signal voltage < 0.40 V
P2433
Secondary Air Injection
System Air Flow/Pressure
Bank 1 Sensor Circuit High
Signal voltage > 4.60 V
282 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Error Message
Malfunction Criteria and
Threshold Value
P2440
Secondary Air Injection
System Switching Valve Stuck
Open Bank 1
• Relative AIR pressure
measured ≤ 3.00 kPa
• Relative AIR pressure
(measured with AIR pressure
sensor vs. modeled) vs.
relative AIR pressure
(measured with AIR pressure
sensor vs. modeled while both
AIR valves closed) >1.50 [-]
• Relative AIR pressure
(measured with AIR pressure
sensor vs. modeled while
valve bank 2 commanded
closed) vs. relative AIR
pressure (measured with
AIR pressure sensor vs.
modeled while valve bank 1
commanded closed) >1.50 [-]
• Difference of average pressure
between absolute value and
filtered value while both valves
commanded closed >= 0.30 1.00 kPa
P2442
Secondary Air Injection
System Switching Valve Stuck
Open Bank 2
• Relative AIR pressure
measured ≤ 3.00 kPa
• Relative AIR pressure
(measured with AIR pressure
sensor vs. modeled) vs.
relative AIR pressure
(measured with AIR pressure
sensor vs. modeled while both
AIR valves closed) >1.50 [-]
• Relative AIR pressure
(measured with AIR pressure
sensor vs. modeled while
valve bank 2 commanded
closed) vs. relative AIR
pressure (measured with
AIR pressure sensor vs.
modeled while valve bank 1
commanded closed) >1.50 [-]
• Difference of average pressure
between absolute value and
filtered value while both valves
commanded closed ≥ 0.30 1.00 kPa
Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 283
DTC Chart
DTC
DTC
Error Message
Malfunction Criteria and
Threshold Value
P2539
Low Pressure Fuel System
Sensor Circuit
Signal voltage > 4.80 V
P2540
Low Pressure Fuel System
Sensor Circuit Range/
Performance
Actual pressure deviation < 800
kPa < 80 kPa
P2541
Low Pressure Fuel System
Sensor Circuit Low
Signal voltage < 0.20 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 1
Sensor 1
O2S signal front > 4.8 V
284 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013
Engine Codes - 6.3L CEJA
Fuel and Air Mixture,
Additional Emissions Regulations
DTC
Error Message
Malfunction Criteria and
Threshold Value
P000A
"A" Camshaft Position Slow
Response (Bank 1)
• Difference between target
position vs. actual position
> 6.00 - 50.00° CRK
• for time > 1.3 - 5.0 Sec
and
• Adjustment angle ≥ 3.00° CRK
P000B
B" Camshaft Position Slow
Response (Bank 1)
Slow response
• Difference between target
position vs. actual position
> 6.00 - 20.0° CRK
• for time > 1.3 - 7.5 Sec
and
• Adjustment angle ≥ 3.00° CRK
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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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