ASYMMETRIC FAULT:
• Difference of R2L area ratio
vs. L2R area ratio NOT (-0.40
- 0.40)
• Values of both counters for
area ratio R2L and L2R ≥ 5
Delay Time:
• Gradient ratio ≥ 0.50
• Lower value of both area ratios
R2L and L2R < 0.30
Transient Time:
• Gradient ratio ≥ 0.50
• Gradient ratio ≤ 0.55
• Lower value of both area ratios
R2L and L2R < 0.30
• or lower value of both gradient
ratios R2L and L2R < 0.50

P3215

Exhaust-Bank3Sensor2,Heater Circuit Short
Circuit to Ground

Heater voltage, < 2.34 V

P3216

Exhaust-Bank 3-Sensor 2,
Heater Circuit Short Circuit
to B+

Heater voltage > 3.59 V

P3217

Exhaust-Bank 3-Sensor 2,
Heater Circuit Open Circuit

Heater voltage, 2.34 - 3.59 V

P3218

Exhaust-Bank 3-Sensor
2, Heater Circuit Electrical
Malfunction

Heater resistance > 500 10000Ω

Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 303

DTC Chart

DTC

DTC

Error Message

Malfunction Criteria and
Threshold Value

P3220

Exhaust-Bank 3-Sensor 2
Voltage Too Low

• Signal voltage < 0.06 V for
time > 3.0 Sec
and
• Difference of sensor voltage
with load pulse and voltage
without load pulse (mean value
of 3 measurements) < 0.01 V

P3221

Exhaust-Bank 3-Sensor 2
Voltage Too High

• Signal voltage > 1.08 V
• for time > 5.0 Sec

P3223

Exhaust-Bank 3-Sensor 2 No
Activity Detected

• Signal voltage 0.40 - 0.60 V for
time > 3.0 Sec
and
• Difference of sensor voltage
with load pulse and voltage
without load pulse (mean value
of 3 measurements) ≥ 2.80 V
or
• Internal resistance > 40000Ω
and
• Exhaust temperature > 700° C

P3224

Exhaust-Bank 3-Sensor 2
Signal Too Slow

• Arithmetric filtered max
differential transient time at
fuel cut off >= 0.5 Sec
and
• Number of checks ≥ 3.00

P3230

Exhaust-Bank 4 -Sensor 1,
Heating Circuit Short Circuit to
Ground

Signal voltage 0.0 - 3.26 V

P3231

Exhaust-Bank 4 -Sensor1 ,
Heating Circuit Short Circuit
to B+

Signal current > 5.50 A

P3232

Exhaust-Bank 4 -Sensor 1,
Heating Circuit Open Circuit

Signal voltage > 4.70 - 5.40 V

P3235

Exhaust-Bank 4-Sensor 1
Voltage Too Low

Short to ground
• Virtual mass (VM) voltage
< 1.75 V
• Nernst voltage (UN) < 1.50 V
• Adjustment voltage (IP)
< 0.30 V

304 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013

Error Message

Malfunction Criteria and
Threshold Value

P3236

Exhaust-Bank 4-Sensor 1
Voltage Too High

Short to battery
• Virtual mass (VM) voltage
˃ 3.25 V
• Nernst voltage (UN) ˃ 4.40 V
• Adjustment voltage (IP)
˃ 7.00 V

P3237

Exhaust-Bank 4-Sensor 1
Electrical Error In Circuit

O2S ceramic temp. < 690° C

P3239

Exhaust-Bank 4-Sensor 1
Signal Too Slow

SYMMETRIC FAULT:
• Difference of R2L area ratio vs.
L2R area ratio -0.40 - 0.40
• Lower value of both counters
for area ratio R2L and L2R ≥
5 times
Delay Time:
• Gradient ratio ≥ 0.50
• Lower value of both area ratios
R2L and L2R < 0.30
Transient Time:
• Gradient ratio ≥ 0.50
• Gradient ratio ≤ 0.55
• Lower value of both area ratios
R2L and L2R < 0.30
• or lower value of both gradient
ratios R2L and L2R < 0.50
ASYMMETRIC FAULT:
• Difference of R2L area ratio
vs. L2R area ratio NOT (-0.40
- 0.40)
• Values of both counters for
area ratio R2L and L2R ≥ 5
Delay Time:
• Gradient ratio ≥ 0.50
• Lower value of both area ratios
R2L and L2R < 0.30
Transient Time:
• Gradient ratio ≥ 0.50
• Gradient ratio ≤ 0.55
• Lower value of both area ratios
R2L and L2R < 0.30
• or lower value of both gradient
ratios R2L and L2R < 0.50

P3245

Exhaust-Bank 4-Sensor
2,Heater Circuit Short Circuit
to Ground

Heater voltage, < 2.34 V

Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 305

DTC Chart

DTC

DTC

Error Message

Malfunction Criteria and
Threshold Value

P3246

Exhaust-Bank 4-Sensor
2,Heater Circuit Short Circuit
to B+

Heater voltage > 3.59 V

P3248

Exhaust-Bank 4-Sensor
2,Heater Circuit Electrical
Malfunction

Heater resistance > 500 10000Ω

P3250

Exhaust-Bank 4-Sensor 2
Voltage Too Low

• Signal voltage < 0.06 V for
time > 3.0 Sec
and
• Difference of sensor voltage
with load pulse and voltage
without load pulse (mean value
of 3 measurements) < 0.01 V

P3251

Exhaust-Bank 4-Sensor 2
Voltage Too High

• Signal voltage > 1.08 V for
time > 5.0 Sec

P3253

Exhaust-Bank 4-Sensor 2 No
Activity Detected

• Signal voltage 0.40 - 0.60 V for
time > 3.0 Sec
and
• Difference of sensor voltage
with load pulse and voltage
without load pulse (mean value
of 3 measurements) ≥ 2.80 V
or
• Internal resistance > 40000Ω
and
• Exhaust temperature > 700° C

P3254

Exhaust-Bank 4-Sensor 2
Signal Too Slow

• Arithmetric filtered max
differential transient time at
fuel cut off ≥ 0.5 Sec
and
• Number of checks ≥ 3.00

P3261

Exhaust Bank 3/4 Oxygen
Sensors Before Catalytic
Converter Swapped

Signal range check (detection
of exchange lambda sensors
upstream catalyst)

P3278

Linear O2 Sensor, Exhaust
Gas Bank 3 / Pump Current
Open Circuit

• O2S signal front 1.46 - 1.54 V
• Delta lambda controller > .10

P3281

Linear O2 Sensor, Exhaust
Gas Bank 3 / Reference
Voltage Open Circuit

• O2S signal front < 0.20 V
• Internal resistance > 950Ω

P3285

Linear O2 Sensor, Exhaust
Bank 3 / Common Ground
(Gnd) Wire Open Circuit

• O2S signal front 1.44 - 1.53 V
and
• Internal resistance > 950 Ω

306 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013

Error Message

Malfunction Criteria and
Threshold Value

P3288

Linear O2 Sensor, Exhaust
Gas Bank 4 / Pump Current
Open Circuit

• O2S signal front 1.46 - 1.54 V
and
• Delta lambda controller > .10

P3291

Linear O2 Sensor, Exhaust
Gas Bank 4 / Reference
Voltage Open Circuit

• O2S signal front > 4.70
• Delta lambda controller > .10

P3295

Linear O2 Sensor, Exhaust
Bank 4 / Common Ground
(GND) Wire Open Circuit

• O2S signal front 1.44 - 1.53 V
and
• Internal resistance > 950 Ω

P3298

Catalytic Converter System,
Exhaust-Bank 3 Efficiency
Below Threshold

0.75% to 6.25%

P0302

Cylinder 2 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

P0303

Cylinder 3 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

P0304

Cylinder 4 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

P0305

Cylinder 5 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

P0306

Cylinder 6 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

P0307

Cylinder 7 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

P0308

Cylinder 8 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

P0309

Cylinder 9 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

P0310

Cylinder 10 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

Audi A8/A8L/S8 Quick Reference Specification Book • September 2013 307

DTC Chart

DTC

DTC

Error Message

Malfunction Criteria and
Threshold Value

P0311

Cylinder 11 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

P0312

Cylinder 12 Misfire Detected

Catalyst damage misfire rate
(MR), > 0.75% to 6.25%

P0321

Ignition/Distributor Engine
Speed Input Circuit Range/
Performance

• Counted versus referenced
teeth, incorrect
or
• Monitoring reference gap
failure

P0322

Ignition/Distributor Engine
Speed Input Circuit No Signal

• Camshaft signal > 3
and
• Engine speed no signal

P0324

Knock Control System Error

• Signal fault counter
(combustion) > 28.00
or
• Signal fault counter
(measuring window) > 5.00

P0327

Knock Sensor 1 Circuit Low
Input Knock Sensor 1 Circuit
Low Input

Short to ground Port B lower
threshold < -0.70 V
• Short to ground Port B lower
threshold < -0.70 V
Short to ground Port A lower
threshold < -0.70 V
• Short to ground Port A lower
threshold < -0.70 V
Signal range check
• Signal range check lower
threshold < 0.7 to 3.0 V

P0328

Knock Sensor Signal Too High • Short to battery plus Port A
upper threshold > 1.00 V
• Signal range check upper
threshold > 44 to 116 V
• Short to battery plus Port B
upper threshold > 1.00 V
• Short to battery plus Port A
upper threshold > 1.00 V
• Signal range check upper
threshold > 69.00 to 116.16 V

308 Audi A8/A8L/S8 Quick Reference Specification Book • September 2013

Error Message

Malfunction Criteria and
Threshold Value

P0332

Knock Sensor 2 Circuit Low
Input

Short to ground Port B lower
threshold < -0.70 V
• Short to ground Port B lower
threshold < -0.70 V
Short to ground Port A lower
threshold < -0.70 V
• Short to ground Port A lower
threshold < -0.70 V
Signal range check
• Signal range check lower
threshold < 0.7 to 3.0 V

P0333

Knock Control System Error

• Short to battery plus Port A
upper threshold > 1.00 V
• Signal range check upper
threshold > 44 to 116 V
• Short to battery plus Port B
upper threshold > 1.00 V V
• Short to battery plus Port A
upper threshold > 1.00 V
• Signal range check upper
threshold > 69.00 to 116.16 V

P0341

Camshaft Position Sensor
Circuit Range/Performance

• Signal pattern incorrect
and
• Defect counter 12.00

P0342

Camshaft Position Sensor
Circuit Low Input

• Signal voltage permanently low
and
• Crankshaft signals 8

P0343

Camshaft Position Sensor “A”
Circuit High (Bank 1 or Single
Sensor)

• Signal voltage permanently