•Pressure control activity, .90...1.15
and
• Difference between target
pressure vs. actual pressure, < 16.38 mPa

160

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DTC

Error Message

Malfunction Criteria and
Threshold Value

Throttle Actuator A Control
Motor Circuit Range/
Performance

• Duty cycle >80%
and
• ECM power stage, no failure
• Deviation throttle valve angles
vs. calculated value 4.0 50.0%

P2106

Throttle Actuator Control
System - Short to B+ or
Ground

Internal check

P2106

Throttle Actuator Control
System Open Circuit

Internal check

P2106

Throttle Actuator Control
System Temperature Current
Monitoring

Internal check failed

P2106

Throttle Actuator Control
System Functional Check

Internal check failed

P2110

Throttle Actuator Control
System - Forced Limited RPM

Engine load out of range

P2122

Throttle/Pedal Position
Sensor/Switch D Circuit Low
Input

Signal voltage < 0.606 V

P2123

Throttle/Pedal Position
Sensor/Switch D Circuit High
Input

Signal voltage > 4.794 V

P2127

Throttle/Pedal Position
Sensor/Switch E Circuit Low
Input

Signal voltage < 0.268 V

P2128

Throttle/Pedal Position
Sensor/Switch E Circuit High
Input

Signal voltage > 2.431 V

P2138

Throttle/Pedal Position
Sensor/Switch D/E Voltage
Correlation

Signal voltage: Difference
between signal sensor 1 vs. 2
> 0.167 - 0.703 V

P2146

Fuel Injector Group A Supply
Voltage Circuit / Short to
Ground

Signal current > 14.90 A

P2149

Fuel Injector Group B Supply
Voltage Circuit / Short to
Ground

Signal current >14.90 A

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DTC Chart

P2101

161

DTC

Error Message

Malfunction Criteria and
Threshold Value

P2181

Cooling System Performance

• Cooling system temp too low
after a sufficient air mass flow
interval, < 74 - 84° C (SULEV)
• < 60 - 84° C (ULEV)

P2195

O2 Sensor Signal Biased/
Stuck Lean (Bank 1,
Sensor 1)

Delta lambda of 2nd lambda
control loop > 0.07

P2196

O2 Sensor Signal Biased/
Stuck Rich (Bank 1, Sensor 1)

Delta lambda of 2nd lambda
control loop < 0.07

P2231

O2 Sensor Signal Circuit
Shorted to Heater Circuit

Delta O2S signal front > 190 uA

P2237

O2 Sensor Positive Current
Control Circuit/Open (Bank 1,
Sensor 1)

• O2S signal front 1.493 - 1.507
V
• O2S signal front < 1.70020 V
and
• Fuel cut-off > 3.00 Sec
• O2S signal front 1.50 - 1.51 V
• Delta lambda controller, > 0.10

P2243

O2 Sensor Reference Voltage
Circuit/Open (Bank 1,
Sensor 1)

• O2S signal front >4.70 V and
Internal resistance > 1000 Ω
• O2S signal front < 0.30 V and
Internal resistance > 1000 Ω

P2257

Air Pump Relay Short to
Ground PZEV only

Signal voltage < 3.00 V

P2258

Air Pump Relay Short to B+
PZEV only

Signal current 0.60 - 1.20 A

P2270

O2 Circuit Slow Response
(Bank 1, Sensor 2) ULEV

Rationality check, O2S signal
rear, < 0.620 - 0.654 mV

P2270

O2 Circuit Slow Response
(Bank 1, Sensor 2) SULEV

Rationality check, O2S signal
rear, < 0.557 - 0.630 mV

P2271

O2 Circuit (Bank 1, Sensor 2)
ULEV

• Measurement range from fuel
cut-off to voltage threshold,
≤ 152.3 mV
• Number of checks (initial
phase), ≥ 1

P2271

O2 Circuit (Bank 1, Sensor 2)
SULEV

Rationality check, O2S signal
rear, < 0.557 - 0.630 mV

P2274

O2 Circuit Slow Response
(Bank 1, Sensor 3) SULEV

Rationality check, O2S signal
rear, 0.620 0.654 mV

P2279

Intake Air System Leak

• Threshold to detect a defective
system > 1.33 - 1.6
and
• Ratio of the tie system
defective during the
measurement window to
the whole duration of the
measurement window
> 0.60000

P2293

Fuel Pressure Regulator 2
Performance

• Difference between target
pressure vs. actual pressure:
> 1.50 mPa
• Difference between target
pressure vs. actual pressure,
< -1.50 mPa

P2294

Fuel Pressure Regulator 2
Control Circuit Open circuit

Signal voltage 2.30 - 2.70 V

P2294

Fuel Pressure Regulator 2
Control Circuit Rationality
Check

Signal pattern incorrect

P2295

Fuel Pressure Regulator 2
Control Circuit Low Short to
Ground

Signal voltage < 1.80 - 2.20 V

P2296

Fuel Pressure Regulator 2
Control Circuit High

Signal voltage > 3.20 V

DTC Chart

P2275

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 current > 5.1 - 7.0 mA

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DTC

Error Message

Malfunction Criteria and
Threshold Value

P2303

Ignition Coil B Primary Control
Circuit Low

Signal current > 24.0 mA

P2304

Ignition Coil B Primary Control
Circuit High

Signal current > 5.1 - 7.0 mA

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 mA

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 mA

Additional Emissions Regulations
DTC

Error Message

P2400

Evaporative Emission System
Leak Detection Pump Control
Circuit/Open

Signal voltage > 4.40 - 5.60 V

P2401

Evaporative Emission System
Leak Detection Pump Control
Circuit Low

Signal voltage < 2.15 to 3.25 V

P2402

Evaporative Emission System
Leak Detection Pump Control
Circuit High

Signal current > 3.0 A

P2403

Evaporative Emission System
Leak Detection Pump Sense
Circuit/Open

Low signal voltage > 0.5 Sec.

P2404

Evaporative Emission System
Leak Detection Pump Sense
Circuit Range/Performance

• High signal voltage > 30.4 V
and
• Number of checks, 30

P2414

O2 Sensor Exhaust Sample
Error (Bank 1, Sensor 1)

• Signal voltage 3.10 - 4.81 V
• Signal voltage 2.5 to 3.2 V
• O2S signal 2.5 - 3.1 V

P2431

Rationality check

Difference between SAI
pressure and ambient pressure
NOT -25.0 - 25.0 hPa

P2432

Signal Range Check

Signal voltage < 0.40 V

P2433

Signal Range Check

Signal voltage > 4.65 V

164

Malfunction Criteria and
Threshold Value

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DTC

Error Message

Malfunction Criteria and
Threshold Value

P2440

System Check After SAI PZEV SAI pressure measured with SAI
only
pressure sensor vs. modeled
while SAI valve closed < 0.55%

P2539

Low Pressure Fuel System
Sensor Circuit

Signal voltage > 4.9 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 < 0.2 V

P2568

RIS Sensor wrong signal
PZEV only

• Signal of sensor mismatched
with radiator
or
• Measured temp. gradients
during 3 meadure windows
always, 5.0 V
PZEV only

P2626

O2 Sensor Pumping Current
Trim Circuit/Open (Bank 1
Sensor 1)

DTC Chart

O2S signal front > 4.81 V

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technical manual at any time. No legal commitment can therefore be
derived from the information, illustrations or descriptions in this manual.
The texts, illustrations and standards in this manual are based on the
information available at the time of printing. No part of this manual may
be reprinted, reproduced or translated without the written permission of
Audi of America.
All rights under the copyright laws are expressly reserved by Audi of
America. Subject to alteration and amendment.
Printed in the United States
© 2012 Audi of America, Inc.

A3QUSPEC2013