stage > 5 V or < 3.4 V

P2012

Intake Manifold Runner (Bank
2) Control Circuit Low

Diagnostic signal from power
stage 8 to 18 A

P2013

Intake Manifold Runner (Bank
2) Control Circuit High

Diagnostic signal from power
stage = 8 to 18 A

P2015

Intake Manifold Runner
Position Sensor Circuit
Range/Performance

• Position sensor signal
< 3550 mV
• Position sensor signal
> 1450 mV
or
• Position sensor signal
> 550 mV and < 250 mV
or
• Position sensor signal
> 4450 mV and < 4750 mV

P2016

Intake Manifold Runner
Position Sensor Circuit Low

Position sensor signal ≤ 250 mV

P2017

Intake Manifold Runner
Position Sensor Circuit High

Position sensor signal
≥ 4750 mV

P202A

Reducing Agent Tank Heater
Control Circuit/Open

Conductance @ start of heating
≤ 0.10 1/Ohm

Audi A7 Reference Specification Book

•

September 2013

259

DTC Chart

DTC

DTC

Error Message

Malfunction Criteria and
Threshold Value

P202B

Reducing Agent Tank Heater
Control Circuit Low

Conductance @ start of heating
< 0.20 Ohm

P202C

Reducing Agent Tank Heater
Control Circuit High

Conductance @ start of heating
> 1 Ohm

P2020

Intake Manifold Runner
Position Sensor Circuit (Bank
2) Range/Performance

• Position sensor signal
< 3550 mV
• Position sensor signal
> 1450 mV
or
• Position sensor signal
> 550 mV and < 250 mV
or
• Position sensor signal
> 4450 mV and < 4750 mV

P2021

Intake Manifold Runner
Position Sensor Circuit (Bank
2) Low

Position sensor signal ≤ 250 mV

P2022

Intake Manifold Runner
Position Sensor Circuit (Bank
2) High

Position sensor signal
≥ 4750 mV

P203B

Reducing Agent Level Sensor
Circuit Range / Performance

• Signal voltage not equal full
level < 1.76 V or > 2.02 V
or
• Signal voltage not equal half
full level, 2.03 V or > 2.31 V
or
• Signal voltage not equal empty
level < 1.32 V or > 1.53 V
or
• Signal voltage not equal SCR
values < 0.25 V > 2.35 V

P203C

Reducing Agent Level Sensor
Circuit Open or Grounded

Signal Voltage < 0.1 V

P203D

Reducing Agent Level Sensor
Circuit Short to Battery
Voltage

Signal Voltage > 4.8 V

P2031

Exhaust Gas Temperature
Sensor 2 Circuit

Signal voltage > 2.61 V

P2032

Exhaust Gas Temperature
Sensor 2 Circuit Low

Signal voltage < 0.68 V

P204A

Reducing Agent Pressure
Sensor Circuit Open / Short
Ground

Signal voltage < 0.1 V

260

Audi A7 Reference Specification Book

•

September 2013

DTC

Error Message

Malfunction Criteria and
Threshold Value

Reducing Agent Pressure
Sensor Circuit Range /
Performance

Actual pressure reduction agent
delivery system > 50.00 kPa or
< 50.00 kPa

P204D

Reducing Agent Pressure
Sensor Circuit High

Signal voltage > 4.90 V

P2047

Reducing Agent Injection
Valve Circuit Open

Signal Voltage < 4.7 V

P2048

Reducing Agent Injection
Valve Circuit Grounded

• Signal Voltage < 2.97 V
or
• Signal Current > 1.6 A

P2049

Reducing Agent Injection
Valve Circuit Short to Battery
Voltage

• Signal Current > 1.8 A
or
• Analog measure < 200 mA

P205A

Reducing Agent Tank
Temperature Sensor Circuit
Short to Battery Voltage or
Open

Signal voltage > 4.63 V

P205B

Reducing Agent Tank
Temperature Sensor Circuit
Range/Performance

Case 1:
• AAT > 25 °C
• Difference between reducing
agent (AdBlue®) to ECT
< -30 °K
Case 2:
• AAT < 25 °C
• Difference between reducing
agent (AdBlue®) to ECT
< -30 °K
• Reducing agent temperature
increase while heating tank
< 1.5 K
• For time < 1500.0 s

P205C

Reducing Agent Tank
Temperature Sensor Circuit
Grounded

Signal voltage < 0.18 V

P207F

Reducing Agent Quality
Performance

Average efficiency > 2.50 [-]

P208A

Reducing Agent Pump Control
Circuit Open

Signal Voltage > 4.7 V

P208B

Reducing Agent Pump Does
Not Rotate At Expected
Speeds

• Rotation < 400 RPM
• > 5 Seconds

P208C

Reducing Agent Pump Control
Circuit Grounded

Signal Voltage < 2.74 V

Audi A7 Reference Specification Book

•

September 2013

DTC Chart

P204B

261

DTC

Error Message

P208D

Reducing Agent Pump Control
Circuit High

Signal Current > 4.0 A

P208E

Reducing Agent Injection
Valve Stuck Closed (Bank 1
Unit 1)

Missing number of signal peaks
> 200

P2080

Exhaust Gas Temperature
Sensor Circuit Range/
Performance

• Temperature difference to
temp EGR T3, T4, T5, T6
> 40 °K
or
• Mean value of modeled to
measured T4 > 100 °K

P2084

Exhaust Gas Temperature
Sensor 2 Circuit Range/
Performance

• Temperature difference to
temp EGR T3, T4, T5, T6 >
40 °K
or
• Mean value of modeled to
measured T3 > 100 °K

P20BB

Reducing Agent Tank Heater
Control Circuit Shorted to
Ground

Diagnostic signal from power
stage > 14A

P20BC

Reducing Agent Tank Heater
Control Circuit Shorted to
Battery Voltage

Diagnostic signal from power
stage > 1 A

P20BD

Reducing Agent Heater 2
Control Circuit/Open

Diagnostic signal from power
stage < 1 A

P20BF

Reducing Agent Heater 2
Control Circuit/Low

Diagnostic signal from power
stage < 14 A

P20B5

Reducing Agent Metering Unit
Heater Control Circuit/Open

Conductance during heating
≤ 0.10 1/Ohm

P20B7

Reducing Agent Metering Unit
Heater Control Circuit Low

Conductance @ start heating
< 0.30 1/Ohm

P20B8

Reducing Agent Metering Unit
Heater Control Circuit High

Conductance @ start heating
> 1.00 1/Ohm

P20B9

Reducing Agent Tank Heater
Control Circuit Open

Diagnostic signal from power
stage < 1A

P20C0

Reducing Agent Heater 2
Control Circuit High

Diagnostic signal from power
stage < 1 A

P20EE

SCR NOx Catalyst Efficiency
Below Threshold

Difference between calculated
and measured efficiency < 0.4[-]

262

Malfunction Criteria and
Threshold Value

Audi A7 Reference Specification Book

•

September 2013

Error Message

P20E8

Reducing Agent Pressure Too
Low / Functional check

• Actual pressure < 300.00 kPa
for 55 s
or
• Actual pressure < 350.00 kPa
for 60 s
or
• Pressure built up for 21.00[-]
Attempts > 450 kPa

P20FE

Reducing Agent Quality
Performance

Average Efficiency > 2.50 [-]

P20E9

Reducing Agent Pressure Too
High

• Actual pressure > 790.00 kPa
for 0.0 s
or
• Actual pressure > 650.00 kPa
for 10 s
or
• Pressure @ Dosing end
> 50 kPa

P20FF

Reducing Agent Metering
Internal fault
System Control Module -J880Detects Internal Hardware
Defects

P20F4

Reducing Agent Consumption
Too High

SCR adaptive value ≥ 2.50

P20F5

Reducing Agent Consumption
Too Low

SCR adaptive value ≤ 0.51

P21CA

Reducing Agent Metering
Sensor supply voltage < 1 V
System Control Module -J880Detects Short Circuit of Heater
Supply Voltage to B+

P21CC

Reducing Agent Metering
System Control Module
-J880- Detects Short Circuit
Of Heater Supply Voltage to
Ground

Sensor supply voltage > 7 V

P21C7

Reducing Agent Metering
System Control Module
-J880- Detects Short Circuit to
Ground on Main Relay

Supply voltage during activation
>7V

P21C9

Reducing Agent Metering
Supply voltage during activation
System Control Module -J880- < 1 V
Detects Short Circuit to B+ on
Main Relay

Audi A7 Reference Specification Book

Malfunction Criteria and
Threshold Value

•

September 2013

263

DTC Chart

DTC

DTC

Error Message

Malfunction Criteria and
Threshold Value

P2100

Throttle Actuator Control
Motor Circuit/Open

Signal from power stage
> 3.26 V and < 5.40 V

P2101

Throttle Actuator Control
Motor Circuit Range/
Performance

Signal = no change

P2102

Throttle Actuator Control
Motor Circuit Low

Signal from power stage
≤ 3.26 V

P2103

Throttle Actuator Control
Motor Circuit High