• Signal current > 1.4 - 0.7 A
• Sense circuit voltage < 6 V

P0688

ECM/PCM Power Relay
Sense Circuit

• Sense voltage < 3.0 V
• Difference sense circuit
voltage with camshaft actuator
commanded off and on > 2.5 V
• Battery voltage > 3 V

P0697

Sensor Reference Voltage C
Circuit/Open

Signal voltage deviation
> ± 0.3 V

P0698

Sensor Reference Voltage C
Circuit Low

Signal voltage < 4.6 - 5.0 V

P0699

Sensor Reference Voltage C
Circuit High

5V supply voltage > 4.99 5.41 V

P062B

Injection Valves
Communication

Internal logic failure

U0001

High Speed CAN
Communication Bus

CAN message, no feedback

U0002

High Speed CAN
Communication Bus

Global time out

U0100

Lost Communication with
ECM/PCM A

• Failure of all CAN engine
messages, time out
> 490 mSec.
• Failure of all CAN engine
messages, but not all CAN
messages, time out
> 1010 mSec.

U0101

Lost Communication with TCM CAN communication with TCM,
time out. check No message
received by ECM

U0121

CAN ABS Brake Unit

CAN communication with ABS,
time out

U0140

CAN communication with
Body Control Module

Received CAN message - no
message

U0146

CAN Gateway A

CAN communication with
gateway, time out

U0155

CAN Instrument Cluster

Received CAN message - no
message

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DTC

Error Message

Malfunction Criteria and
Threshold Value

U0302

Software Incompatibility with
Transmission Control Module

AT vehicle ECM coded as MT
vehicle

U0323

CAN: Instrument cluster Audi
only

Ambient temperature value
module not encoded for ambient
temp sensor, 00h

U0402

CAN Communication with
TCM

Data length code transmitted,
incorrect

U0404

Invalid Data Received From
Gear Shift Control Module

• If the value of message
counter is permanent, constant,
or change exceeds a threshold,
increment an event counter
• Maximum change of message
counter > 5

U0415

CAN link to speed sensor

Vehicle speed > 325 km/h

U0415

CAN: Vehicle Speed Sensor

• Speed sensor signal:
initialization error 655.34km/h
• Speed sensor signal: low
voltage error 655.33km/h
• Speed sensor signal: sensor
error 655.35 km/h
• Vehicle speed >/= 325 km/h

U0422

CAN: Instrument cluster

Ambient temperature value
initialization, Audi 01 h

U0423

CAN: Instrument cluster

Received CAN message,
implausible message

U0447

CAN Gateway

CAN message incorrect

Fuel and Air Ratios Control Module
DTC

Error Message

P11A1

Cylinder 1 Exhaust Cam Low
Lift Electrical Fault

P11A2

Cylinder 1 Functional Test,
Fault Switching to Low
Exhaust Cam Lift

P11A3

Cylinder 2 Exhaust Cam Low
Lift Electrical Fault

P11A4

Cylinder 2 Functional Test,
Fault Switching to Low
Exhaust Cam Lift

224

Malfunction Criteria and
Threshold Value

0.00147 s

0.00147 s

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November 2012

Error Message

Malfunction Criteria and
Threshold Value

DTC Chart

DTC
P11A5

Cylinder 3 Exhaust Cam Low
Lift Electrical Fault

P11A6

Cylinder 3 Functional Test,
Fault Switching to Low
Exhaust Cam Lift

P11A7

Cylinder 4 Exhaust Cam Low
Lift Electrical Fault

P11A8

Cylinder 4 Functional Test,
Fault Switching to Low
Exhaust Cam Lift

0.00147 s

P1114

Internal Resistance Too Large
(Bank 1, Sensor 2)

Heater resistance, (128-648)*(840)1.02-25.9 k Ω (dep. on
mod. exhaust temp. and heater
power)

P12A1

Fuel Rail Pressure Sensor
Inappropriately Low

• Pressure control activity
> 0.25 MPa
and
• Fuel trim activity < 0.85

P12A2

Fuel Rail Pressure Sensor
Inappropriately High

• Pressure control activity
> 0.25 MPa
and
• Fuel trim activity < 0.85

P12A4

Fuel Rail Pump Control Valve
Stuck Closed

• Fuel trim activity 0.85 to 1.15
and
• Pressure control activity
< 6.0 mPa

0.00147 s

P13EA Ignition Timing Monitor

Difference between commanded
spark timing and actual value
> 0.60%

P150A

Comparison of engine off time
from instrument cluster control
unit with engine after run time.
• Difference between engine off
time and ECM after run time
< -12.0 Sec.
Comparison of engine off time
from instrument cluster control
unit with engine after run time
• Difference between engine off
time and ECM after run time
> 12.0 Sec.

Engine Off Time Performance

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DTC

Error Message

Malfunction Criteria and
Threshold Value

P2101

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 failed

P2106

Throttle Actuator Control
System Open Circuit

Internal check failed

P2106

Throttle Actuator Control
System Temp./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 < 0.646 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 < 0.276 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 and 2
> 0.143 - 0.703 V

P2146

Fuel Injector Group A Supply
Voltage Circuit/Open

Short to ground (high side)
• Signal current > 14.90 A
Short to battery plus (high side)
• Signal current < 2.60 A

P2149

Fuel Injector Group B Supply
Voltage Circuit/Open

Short to ground (high side)
• Signal current > 14.90 A
Short to battery plus (high side)
• Signal current < 2.60 A

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Error Message

Malfunction Criteria and
Threshold Value

DTC Chart

DTC
P2177

Fuel System

• System too lean at part load
• Adaptive value > 26%

P2178

Fuel System

• System too rich at part load
• Adaptive value < 26%

P2181

Cooling System Performance

Cooling system temp too low
after a sufficient air mass flow
interval 55 - 80°C

P2187

Fuel System

• System too lean at idle
• Adaptive value > 5.02%

P2188

Fuel System

• System too rich at idle
• Adaptive value < 6.0%

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)

• Lambda set value < 0.97
or
• O2S signal front 1.49 - 1.51
and lambda set value > 1.03 V
• O2S signal front < 1.70 V and
fuel cut off > 3.00 Sec.
• O2S signal front 1.49 - 1.51 V
and delta lambda controller
> 0.10

P2243

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

• O2S signal front < 0.30 V and
Internal resistance
> 1000 Ohms
• O2S signal front > 3.25 V and
Internal resistance
> 1000 Ohms

P2257

Air Pump Relay Short to
Ground (PZEV)

Signal voltage < 3.00 V

P2258

Air Pump Relay Short to B+
(PZEV)

Signal current 0.60 - 1.20 A

P2270

O2 Circuit Slow Response
(Bank 1, Sensor 2)

O2S signal rear < 0.603 0.649 V

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