Upper threshold > 1.00 V

P0335

Engine Speed Sensor

• Open circuit > 1 V
• Short to grnd < 1.5 V
• Short to B+ > 3.5 V
• Signal check no signal

P0336

Engine Speed Sensor

• RPM signal comparison with
phase sensor not synchronous
• Counted versus reference
teeth > 1
• Actual time value vs modeled
time value > 1.375

P0340

Camshaft Position Sensor
A Circuit (Bank 1 or Single
Sensor)

Signal activity check
• Signal voltage no altering @
4 Rev

P0341

Camshaft Position Sensor A
Circuit Range/Performance
(Bank 1 or Single Sensor)

• Signal pattern incorrect
• defect counter 6.00

P0342

Camshaft Position Sensor A
Circuit Low Input (Bank 1 or
Single Sensor)

• Signal voltage permanently low
and
• Crankshaft signals 4.00

300

Malfunction Criteria and
Threshold Value

Audi A6/S6 Quick Reference Specification Book

•

September 2013

Error Message

Malfunction Criteria and
Threshold Value

P0343

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

• Signal voltage permanently
high
• Crankshaft signals 4

P0345

Camshaft Position Sensor
A Circuit (Bank 1 or single
sensor)

Signal activity check
• Signal signal activity check

P0346

Camshaft Position Sensor A
Circuit Range/Performance
(Bank 2 or Single Sensor)

• Signal pattern incorrect
• Defect counter 6.00

P0347

Camshaft Position Sensor A
Circuit Low (Bank 2 or Single
Sensor)

• Signal voltage permanently
low
and
• Crankshaft signals 4.00

P0348

Sensor A Circuit High (Bank 2
or Single Sensor)

• Signal voltage permanently
high
and
• Crankshaft signals 4

P0351

Ignition Coil A Primary/
Secondary Circuit

Open circuit
• Signal current < 0.25 to
2.0 mA
or
• Internal check failed

P0352

Ignition Coil B Primary/
Secondary Circuit

Open circuit
• Signal current < 0.25 to
2.0 mA
or
• Internal check failed

P0353

Ignition Coil C Primary/
Secondary Circuit

Open circuit
• Signal current < 0.25 to
2.0 mA
or
• Internal check failed

P0354

Ignition Coil D Primary/
Secondary Circuit

Open circuit
• Signal current < 0.25 to
2.0 mA
or
• Internal check failed

P0355

Ignition Coil E Primary/
Secondary Circuit

Open circuit
• Signal current < 0.25 to
2.0 mA
or
• Internal check failed

Audi A6/S6 Quick Reference Specification Book

•

September 2013

DTC Chart

DTC

301

DTC

Error Message

Malfunction Criteria and
Threshold Value

P0356

Ignition Coil F Primary/
Secondary Circuit

Open circuit
• Signal current < 0.25 to
2.0 mA
or
• Internal check failed

P0357

Ignition Coil G Primary/
Secondary Circuit

Open circuit
• Signal current < 0.25 to
2.0 mA
or
• Internal check failed

P0358

Ignition Coil H Primary/
Secondary Circuit

Open circuit
• Signal current < 0.25 to
2.0 mA
or
• Internal check failed

P0366

Camshaft Position Sensor A
Circuit Range/Performance
(Bank 1 or Single Sensor)

• Signal pattern incorrect
• Defect counter 6

P0367

Camshaft Position Sensor A
Circuit Low (Bank 1 or Single
Sensor)

• Signal voltage permanently low
and
• Crankshaft signals 4.00

P0368

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

• Signal voltage permanently
high
and
• Crankshaft signals 4.00

P0391

Camshaft Position Sensor A
Circuit Range/Performance
(Bank 2 or Single Sensor)

• Signal pattern incorrect
• Defect counter 6

P0392

Camshaft Position Sensor A
Circuit Low (Bank 2 or Single
Sensor)

• Signal voltage permanently low
and
• Crankshaft signals 4.00

P0393

Camshaft Position Sensor A
Circuit High (Bank 2 or Single
Sensor)

• Signal voltage permanently
high
and
• Crankshaft signals 4.00

Additional Exhaust Regulation
DTC
P0410

302

Error Message
Rationality Check Directly
after Catalyst Heating

Malfunction Criteria and
Threshold Value
Difference ambient pressure vs.
AIR pressure measured with
AIR pressure sensor > 3.00 kPa

Audi A6/S6 Quick Reference Specification Book

•

September 2013

DTC

Error Message

Malfunction Criteria and
Threshold Value

Open Circuit

Signal voltage 4.70 - 5.40 V

P0414

Short to Ground or Short to
Battery Voltage

Signal voltage 0.0 - 3.25 V
Signal current > 2.20 A

P0417

Short to Ground or Short to
Battery Voltage

Signal voltage 0.0 - 3.25 V
Signal current > 2.20 A

P0418

Air Pump Relay Open Circuit

Signal voltage 4.70 - 5.40 V

P0420

Catalyst System Efficiency
Below Threshold

Measured OSC / OSC of
borderline catalyst. EWMA filter
value for catalyst , < 1.0

P0421

Catalyst Bank 1

EWMA filter value for catalyst
< 0.2

P0430

Catalyst System Bank 2

Amplitude ratio O2S > 1.5

P0431

Catalyst Bank 2

EWMA filter value for catalyst
< 0.2

P0441

Evaporative Emission System
functional check Valve Stuck
(Purge Flow)

Deviation lambda control
< 2.50% and deviation idle
control < 20%

P0442

Evaporative Emission System
Leak Detected (Small Leak)

Time for pressure drop < 1.7 2.2 Sec.

P0444

Evaporative Emission System
Purge Control Valve Circuit
Open

Signal voltage > 4.70 - 5.40 V

P0450

NVLD switch

Open circuit signal voltage 0.39
- 0.55 V

P0451

NVLD switch

Natural vacuum leak detection
(NVLD) switch position stuck
closed

P0452

NVLD switch

Short to ground
signal voltage< 0.24 V

P0453

NVLD switch

Short to battery voltage signal
voltage > 3.0 V

P0455

Evaporative Emission System
Leak Detected (Gross Leak/
No Flow)

Time for pressure drop
< 0.95 - 1.1 Sec.

P0456

Evaporative Emission System
Leak Detected (Very Small
Leak)

• Natural vacuum leak detection
(NVLD) switch position
• Switch Open

P0458

Evaporative Emission System
Purge Control Valve Circuit
Low or Short to Ground

Signal voltage, < 0.0 - 3.26 V

Audi A6/S6 Quick Reference Specification Book

•

September 2013

DTC Chart

P0413

303

DTC

Error Message

P0459

Evaporative Emission System
Purge Control Valve Circuit
High or Short to Voltage

Signal current > 2.2 A

P0491

Secondary Air System
Insufficient Flow (Bank 1)

• Blockage: relative AIR
pressure measured with AIR
pressure sensor vs. modeled
< 0.10 [-]
• Leakage: relative AIR pressure
measured with AIR pressure
sensor vs. modeled < 0.10 [-]
and
• Relative AIR pressure
measured ≤ 3.00 kPa
or
• Blockage: relative AIR
pressure measured with AIR
pressure sensor vs. modeled
< 0.45 [-]
• Leakage: relative AIR pressure
measured with AIR pressure
sensor vs. modeled < 0.45 [-]
and
• Relative AIR pressure
measured ≤ 3.00 kPa
or
• Blockage: relative AIR
pressure measured with
AIR pressure sensor vs.
modeled while valve bank 2
commanded closed < 0.70[-]
• Leakage: relative AIR pressure
measured with AIR pressure
sensor vs. modeled while
valve bank 2 commanded
closed < 0.70 [-]
and
• Relative AIR pressure
measured ≤ 3.00 kPa
or
• Average pressure difference
between absolute value and
filtered value while valve bank
2 commanded closed < 0.14 1.22 kPa
and
• Relative AIR pressure
measured ≤ 3.00 kPa

304

Malfunction Criteria and
Threshold Value

Audi A6/S6 Quick Reference Specification Book

•

September 2013

P0492

Error Message
Secondary Air System
Insufficient Flow (Bank 2)

Malfunction Criteria and
Threshold Value
• Blockage: relative AIR
pressure measured with AIR
pressure sensor vs. modeled
< 0.10 [-]
• Leakage: relative AIR pressure
measured with AIR pressure
sensor vs. modeled < 0.10 [-]
and
• Relative AIR pressure
measured ≤ 3.00 kPa
or
• Blockage: relative AIR
pressure measured with AIR
pressure sensor vs. modeled
< 0.45 [-]
• Leakage: relative AIR pressure
measured with AIR pressure
sensor vs. modeled < 0.45 [-]
and
• Relative AIR pressure
measured ≤ 3.00 kPa
or
• Blockage: relative AIR
pressure measured with
AIR pressure sensor vs.
modeled while valve bank 2
commanded closed < 0.70[-]
• Leakage: relative AIR pressure
measured with AIR pressure
sensor vs. modeled while
valve bank 2 commanded
closed < 0.70 [-]
and
• Relative AIR pressure
measured ≤ 3.00 kPa
or
• Average pressure difference
between absolute value and
filtered value while valve bank
2 commanded closed < 0.14 1.22 kPa
and
• Relative AIR pressure
measured ≤ 3.00 kPa

Audi A6/S6 Quick Reference Specification Book

•