Error Message

P0052

HO2S Heater Control Circuit
High (Bank 1, Sensor 1) Short
to B+

Heater current > 5.50 A

P0056

HO2S Heater Control Circuit
(Bank 1, Sensor 2) Open
Circuit

Signal voltage 2.34 - 3.59 V

P0057

HO2S Heater Control Circuit
Low (Bank 1, Sensor 2) Short
to Ground

Heater voltage < 2.34 V

P0058

HO2S Heater Control Circuit
High (Bank 1, Sensor 2) Short
to B+

Signal current > 3.59 A

P0068

MAP/MAF – Throttle Position
Correlation

• Deviation throttle controller
< 43 or > 43%

P0070

Ambient air temp sensor short
to B+

Ambient air temp 24.8 - 39.8 K
and
• Difference AAT vs. ECT at
engine start > 24.8 - 39.8 K
(depending on engine off time)

P0072

Ambient Air Temperature
Sensor Short to Ground

Ambient air temp >87.0 °C

P007C

Intake Air Temperature Sensor Intake air temperature < 0.099 V
after Intercooler 1

P007D

Intake Air Temperature Sensor Intake air temperature > 3.20 V
after Intercooler 1

P0087

Fuel Rail/System Pressure Too Low

• Pressure control activity
> 1.0 mPa
and
• Fuel trim activity 0.90 - 120
and
• Difference between target
pressure vs. actual pressure
> 0.40 mPa

P0088

Fuel Rail/System Pressure Too High

Fuel rail pressure > 13.9 MPa

284

Malfunction Criteria and
Threshold Value

Audi A6/S6 Quick Reference Specification Book

•

September 2013

Error Message

Malfunction Criteria and
Threshold Value

P0089

Fuel Pressure Regulator 1
Performance

• Difference between actual
pressure - target pressure
>200 kPa
• Pressure control activity < -350
kPa or >350 kPa

P008A

Fuel Pressure Out of Range
Low

< 80.0 kPa

P008B

Fuel Pressure Out of Range
High

Actual press > 850 MPa

P0096

Charge Air Cooler
Temperatture (Sensor 1)
Cross Checking

Difference charge air cooler
temp. sensor 1 vs. median
between (ECT, IAT, Charge air
cooler temp. sensor 1, Charge
air cooler temp. sensor 2)
> 9.8 K

P0097

Charge Air Cooler
Temperature (Sensor 1)
Short to Ground

Signal voltage < 0.10 V

P0098

Charge Air Cooler
Temperature (Sensor 1)
Short to Battery Voltage /
Open Circuit

Signal voltage > 4.62 V

P00A6

Charge Air Cooler
Temperature (Sensor 2)
Cross Checking

Difference charge air cooler
temp. sensor 2 vs. median
between (ECT, IAT, Charge air
cooler temp. sensor 2 , Charge
air cooler temp. sensor 1)
> 9.8 K

P00A7

Charge Air Cooler
Temperature (Sensor 2)
Short to Ground

Signal Voltage < 0.10 V

P00A8

Charge Air Cooler
Temperature (Sensor 2)
Short to Battery Voltage /
Open Circuit

Signal Voltage > 4.62 V

P0100

Mass or Volume Air Flow A
Circuit

MAF sensor signal 0 µs

Audi A6/S6 Quick Reference Specification Book

•

September 2013

285

DTC Chart

DTC

DTC

Error Message

Malfunction Criteria and
Threshold Value

P0101

Mass or Volume Air Flow A
Circuit Range/Performance

• Mass air flow vs. lower
threshold model < 11 - 192%
• Mass air flow vs upper
threshold > 120 - 168%
• Load calculation >20%.
and
• Fuel system (mult) < 15%
and
• Mass air flow vs. calculated
mass air flow < 20%

P0102

Mass or Volume Air Flow A
Circuit Low Input

MAF sensor signal, < 0.2 V

P0103

Mass or Volume Air Flow A
Circuit High Input

MAF sensor signal > 4.8 V

P0106

Manifold Pressure Sensor
Range/Performance

Boost pressure signal
• Manifold pressure signal:
variation between state 1 and
2 < 50.00 [hPa]

P0107

Manifold Pressure Sensor

• Signal voltage > 0.20 V
Range check:
• Manifold pressure signal
< 80.00 hPa

P0108

Manifold Pressure Sensor

• Signal voltage < 4.80 V
Range check:
• Manifold pressure signal
> 1170.00 hPa

P0111

Intake Air Temperature Sensor • Difference IAT vs. ECT at
1 Cross Check
engine start > 24.8 - 39.8 K
• (Depending on engine off time)
and diff. IAT vs. AAT at engine
start > 24.8 - 39.8 K

P0112

Intake Air Temperature Sensor Signal voltage < 0.15 V
1 Circuit Low Input

P0113

Intake Air Temperature Sensor Signal voltage > 4.50 V
1 Circuit High Input

P0116

Engine Coolant Temperature
Sensor 1 Circuit Range/
Performance

286

•Difference ECT vs. IAT at
engine start > 24.8 - 39.8 K
and
• Difference IAT vs. AAT at
engine start < 24.8 - 39.8 K
and
• Difference AAT vs. ECT at
engine start < 24.8 - 39.8 K
(depending on engine off time)

Audi A6/S6 Quick Reference Specification Book

•

September 2013

Error Message

Malfunction Criteria and
Threshold Value

P0117

Engine Coolant Temperature
Sensor 1 Circuit Low Input

Engine coolant temperature
> 140°C

P0118

Engine Coolant Temperature
Sensor 1 Circuit Open

Engine coolant temperature
< 40°C

P0121

Throttle/Pedal Position Sensor • TPS 1 - TPS 2 > 6.30%
A Circuit Range/Performance
and
• TPS 1 calculated value
> 9.00%

P0122

Throttle/Pedal Position Sensor Signal voltage < 0.18 V
A Circuit Low Input

P0123

Throttle/Pedal Position Sensor Signal voltage > 4.63 V
A Circuit High Input

P0130

O2 Sensor Circuit (Bank 1,
Sensor 1)

O2S ceramic temperature
< 640°C

P012B

Charger Inlet Pressure
Rationality Check

• Pressure difference in cross
check between boost pressure
sensor 1/2; IM pressure,
ambient pressure sensor
• Pressure difference in cross
check between boost pressure
sensor 1/2; IM pressure

P012C

Charger Inlet Pressure Short
to Ground

Signal voltage < 0.2 V

P012D

Charger Inlet Pressure Short
to B+

Signal voltage > 4.8 V

P0130

O2 Sensor Circuit (Bank 1,
Sensor 1)

Sensor element temperature
< 690° C

P0131

O2 Sensor Circuit (Bank 1,
Sensor 1) Low Voltage

Virtual mass < 1.75 V
Nernst voltage < 1.50 V
Adjustment voltage < 3.0 V

P0132

O2 Sensor Circuit (Bank 1,
Sensor 1) High Voltage

Virtual mass > 3.25 V
Nernst voltage > 4.40 V
Adjustment voltage > 7 V

Audi A6/S6 Quick Reference Specification Book

•

September 2013

287

DTC Chart

DTC

DTC
P0133

288

Error Message
O2 Circuit Slow Response
(Bank 1, Sensor 1)

Malfunction Criteria and
Threshold Value
Symmetric fault:
• Difference of R2L area ratio vs.
L2R area ratio -0.50 - 1.00
• Lower value of both counters
for area ratio R2L and L2R ≥
5 times
Delay Time:
• Gradient ratio ≥ 0.30
• Lower value of both area ratios
R2L and L2R < 0.30
Transient Time:
• Gradient ratio ≥ 0.30
• Gradient ratio ≤ 0.60
• Lower value of both area ratios
R2L and L2R < 0.30
or
• Lower value of both gradient
ratios R2L and L2R < 0.30
Asymmetric fault:
• Difference of R2L area ratio
vs. L2R area ratio NOT (-0.50
- 1.00)
• Values of both counters for
area ratio R2L and L2R ≥ 5
times
Delay Time:
• Gradient ratio ≥ 0.30
• Lower value of both area ratios
R2L and L2R < 0.30
Transient Time:
• Gradient ratio ≥ 0.30)
• Gradient ratio ≤ 0.60
• Lower value of both area ratios
R2L and L2R < 0.30
or
• Lower value of both gradient
ratios R2L and L2R < 0.30

Audi A6/S6 Quick Reference Specification Book

•

September 2013

Error Message

Malfunction Criteria and
Threshold Value

P0135

O2 Heater Circuit (Bank 1,
Sensor 1)

Out of range high
• O2S ceramic temperature
< 725°C
and
• Heater duty cycle 90.00%
Rationality check (sensor
heating up)
• O2S ceramic temperature
< 725°C
and
• Time after O2S heater on 40
Sec.

P0136

O2 Circuit (Bank 1, Sensor 2)

Delta O2S signal rear > 2 V

P0137

O2 Circuit Low Voltage (Bank
1, Sensor 2)

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

P0138

O2 Circuit High Voltage (Bank
1, Sensor 2)

Signal voltage > 1.08 V for
> 5 Sec.

P0139

O2 Circuit Slow Response
(Bank 1 Sensor 2)

O2S rear signal 640 - 645 mV

P013A

Oxygen Sensors Rear (binary
LSF)

• EWMA filtered max differential
transient time at fuel cut off ≥
0.5 Sec
and
• Number of checks ≥ 3.00
(initial phase and step
function)

P013C

Oxygen Sensors Rear (binary
LSF)

• EWMA filtered max differential
transient time at fuel cut off ≥
0.5 Sec
and
• Number of checks ≥ 3.00
(initial phase and step
function)

Audi A6/S6 Quick Reference Specification Book

•

September 2013

289

DTC Chart

DTC

DTC

Error Message

Malfunction Criteria and
Threshold Value

P0140