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Audi Workshop Service and Repair Manuals

Final control diagnosis > < Fault codes up to fault code P1330 (17738)
Motronic injection and ignition system (6 cyl. turbo)
Interrogating and erasing fault memory
Fault codes up to fault code P1854 (18262)

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1335

17743

Engine torque monitoring 2
Control limit exceeded 1)

Check hoses (pressure hoses, hose clamps that may have become loose)
.

1)    With this fault, engine control unit switches on EPC warning lamp in dash panel insert. Significance of EPC warning lamp =>24-144.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1336

17744

Engine torque monitoring
Control limit exceeded

Check hoses (pressure hoses, hose clamps that may have become loose)
.
If the above operations were carried out successfully, replace engine control unit

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1337

17745

Bank 1, camshaft position sensor => -G163
Short to earth 2)

Check Hall sender

P1338

17746

Bank 1, camshaft position sensor => -G163
Open circuit/short to positive 2)

P1340

17748

Camshaft/crankshaft position sensor
Incorrect assignment 2)

Check phase position of Hall sender
.

P1347

17755

Bank 2, camshaft/crankshaft position sensor
Incorrect assignment 2)


2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

Note:

Camshaft position sensor at fault code 17748 refers to bank 1 sensor.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1355

17763

Ignition actuation, cylinder 1
Open circuit 2)

Check actuation of output stages

P1356

17764

Ignition actuation, cylinder 1
Short to positive 2)

P1357

17765

Ignition actuation, cylinder 1
Short to earth 2)

P1358

17766

Ignition actuation, cylinder 2
Open circuit 2)

P1359

17767

Ignition actuation, cylinder 2
Short to positive 2)

P1360

17768

Ignition actuation, cylinder 2
Short to earth 2)

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1361

17769

Ignition actuation, cylinder 3
Open circuit 2)

Check actuation of output stages

P1362

17770

Ignition actuation, cylinder 3
Short to positive 2)

P1363

17771

Ignition actuation, cylinder 3
Short to earth 2)

P1364

17772

Ignition actuation, cylinder 4
Open circuit 2)

P1365

17773

Ignition actuation, cylinder 4
Short to positive 2)

P1366

17774

Ignition actuation, cylinder 4
Short to earth 2)

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1367

17775

Ignition actuation, cylinder 5
Open circuit 2)

Check actuation of output stages

P1368

17776

Ignition actuation, cylinder 5
Short to positive 2)

P1369

17777

Ignition actuation, cylinder 5
Short to earth 2)

P1370

17778

Ignition actuation, cylinder 6
Open circuit 2)

P1371

17779

Ignition actuation, cylinder 6
Short to positive 2)

P1372

17780

Ignition actuation, cylinder 6
Short to earth 2)

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after engine re-start. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1386

17794

Control unit defective

Renew engine control unit
=> Page 24-26

P1387

17795

Control unit defective 2)


P1388

17796

Control unit defective 1)


1)    With this fault, engine control unit switches on EPC warning lamp in dash panel insert. Significance of EPC warning lamp =>24-144.

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1391

17799

Bank 2, camshaft position sensor => -G40
Short to earth 2)

Check Hall sender

P1392

17800

Bank 2, camshaft position sensor => -G40
Open circuit/short to positive2)

=> Page 28-43

P1409

17817

Tank breather valve -N80
Electrical fault in circuit 2)

P1410

17818

Tank breather valve -N80
Short to positive 2)

Check solenoid valve 1 for active carbon canister => Page 24-136

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1411

17819

Bank 2, secondary air system
Throughput too small 2)

Check secondary air pump fuse
Check vacuum hoses
Check hoses from pump to secondary air inlet valve (combination valve)
=> 6-cylinder engine, Mechanical Components; Repair Group 26; Secondary air system

P1414

17822

Bank 2, secondary air system
Leakage detected

Check hoses from pump to mechanical secondary air inlet valve, cylinder bank 2
=> 6-cylinder engine, Mechanical Components; Repair Group 26; Secondary air system

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1420

17828

Secondary air inlet valve -N112
Electrical fault in circuit 2)

Check secondary air inlet valve -N112

P1421

17829

Secondary air inlet valve -N112
Short to earth 2)

=> 6-cylinder engine, Mechanical Components;
=> Repair Group 26; Exhaust system; Testing secondary air inlet valve -N112

P1422

17830

Secondary air inlet valve -N112
Short to positive 2)

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1423

17831

Bank 1, secondary air system
Throughput too small 2)

Test secondary air pump fuse
Check vacuum hoses
Check hoses from pump to secondary air inlet valve (combination valve)
=> 6-cylinder engine, Mechanical Components; Repair Group 26; Secondary air system

P1424

17832

Bank 1, secondary air system
Leakage detected

Check hoses from pump to mechanical secondary air inlet valve, cylinder bank 1
=> 6-cylinder engine, Mechanical Components; Repair Group 26; Secondary air system

P1425

17833

Tank breather valve -N80
Short to earth 2)

Check solenoid valve 1 for active carbon canister => Page 24-136

P1426

17834

Tank breather valve -N80
Open circuit 2)

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1432

17840

Secondary air inlet valve -N112
Open circuit 2)

Check secondary air inlet valve -N112
=> 6-cylinder engine, Mechanical Components;
=> Repair Group 26; Exhaust system; Checking secondary air inlet valve -N112

P1433

17841

Secondary air pump relay -J299
Open circuit 2)

=> Mechanical Components; Repair Group 26; Exhaust system; Testing secondary air pump relay -J299 and actuation

P1434

17842

Secondary air pump relay -J299
Short to positive 2)

P1435

17843

Secondary air pump relay -J299
Short to earth 2)

P1436

17844

Secondary air pump relay -J299
Electrical fault in circuit 2)

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1453

17861

Exhaust gas temperature sender 1 -G235
Open circuit / short to positive


P1454

17862

Exhaust gas temperature sender 1 -G235
Short to earth

=> Mechanical Components; Repair Group 26; Testing exhaust gas temperature sender 1 -G235

P1455

17863

Exhaust gas temperature sender 1 -G235
Implausible signal


P1456

17864

Exhaust gas temperature control, bank 1
Control limit reached

=> Mechanical Components; Repair Group 26; Testing exhaust gas temperature control

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1457

17865

Exhaust gas temperature sender 2 -G235
Open circuit / short to positive


P1458

17866

Exhaust gas temperature sender 2 -G235
Short to earth

=> Mechanical Components; Repair Group 26; Testing exhaust gas temperature sender 2 -G236

P1459

17867

Exhaust gas temperature sender 2 -G235
Implausible signal


P1460

17868

Exhaust gas temperature control, bank 2
Control limit reached

=> Mechanical Components; Repair Group 26; Testing exhaust gas temperature control

P1461

17869

Exhaust gas temperature control, bank 1
Implausible signal

=> Mechanical Components; Repair Group 26; Testing exhaust gas temperature control

P1462

17870

Exhaust gas temperature control, bank 2
Implausible signal

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1500

17908

Fuel pump relay -J17
Electrical fault in circuit 2)

Check fuel pump relay

P1501

17909

Fuel pump relay -J17
Short to earth 2)

.

P1502

17910

Fuel pump relay -J17
Short to positive 2)

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1519

17927

Bank 1, camshaft adjustment
Malfunction

=> Mechanical Components; Repair Group 15; Checking camshaft adjustment; Checking function of camshaft adjustment

P1522

17930

Bank 2, camshaft adjustment
Malfunction

P1523

17931

Crash signal from airbag control unit
Implausible signal

Test crash signal
=> Page 24-196

P1525

17933

Bank 1, camshaft adjustment -N205
Electrical fault in circuit

P1526

17934

Bank 1, camshaft adjustment -N205
Short to positive

=> Mechanical Components; Repair Group 15; Checking camshaft adjustment; Checking valve 1 for camshaft adjustment -N205

P1527

17935

Bank 1, camshaft adjustment -N205
Short to earth

P1528

17936

Bank 1, camshaft adjustment -N205
Open circuit.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1533

17941

Bank 2, camshaft adjustment -N208
Electrical fault in circuit

P1534

17942

Bank 2, camshaft adjustment -N208
Short to positive

P1535

17943

Bank 2, camshaft adjustment -N208
Short to earth

P1536

17944

Bank 2, camshaft adjustment -N208
Open circuit.

P1539

17947

Clutch pedal switch -F36
Implausible signal

- Test clutch pedal switch
=> Page 24-191

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1542

17950

Angle sender for throttle valve actuator -G187
Implausible signal 1) 3)

Checking angle sender for throttle valve actuator

P1543

17951

Angle sender for throttle valve actuator -G187
Signal too small 1) 3)

=> Page 24-155

P1544

17952

Angle sender for throttle valve actuator -G187
Signal too great 1) 3)

Test angle sender for throttle valve actuator => Page 24-155

P1545

17953

Throttle valve control
Malfunction 1) 3)

Check throttle valve control
=> Page 24-147.

P1546

17954

Boost pressure control solenoid valve -N75
Short to positive


P1547

17955

Boost pressure control solenoid valve -N75
Short to earth

=> Mechanical Components; Repair Group 21; Boost air system with exhaust gas turbocharger

P1548

17956

Boost pressure control solenoid valve -N75
Open circuit.


1)    With this fault, engine control unit switches on EPC warning lamp in dash panel insert. Significance of EPC warning lamp =>24-144.

3)    With this fault the engine control unit switches on exhaust gas warning lamp immediately after detecting fault. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1555

17963

Maximum boost pressure exceeded

=> Mechanical Components; Repair Group 21; Boost air system with exhaust gas turbocharger

P1556

17964

Boost pressure control
Control limit not reached

=> Mechanical Components; Repair Group 21; Boost air system with exhaust gas turbocharger

P1557

17965

Boost pressure control
Control limit exceeded


Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1558

17966

Throttle valve drive -G186
Electrical fault in circuit 1) 3)

Test throttle valve control unit => Page 24-147.

P1559

17967

Throttle valve control unit -J338
Fault in basic setting 2)

Perform adaptation
.

P1560

17968

Maximum engine speed exceeded

Rectify possible mechanical damage

P1564

17972

Throttle valve control unit -J338
Undervoltage during basic setting

Charge battery, repeat basic setting or adaptation
.

P1565

17973

Throttle valve control unit -J338
Lower stop not reached 1) 3)

Test throttle valve control unit => Page 24-147.

P1568

17976

Throttle valve control unit -J338
Mechanical fault 1) 3)

1)    With this fault, engine control unit switches on EPC warning lamp in dash panel insert. Significance of EPC warning lamp .

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

3)    With this fault the engine control unit switches on exhaust gas warning lamp immediately after detecting fault. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1569

17977

CCS Switch -E45
Implausible signal

Test cruise control system switch
=> Electrical System; Repair Group 01; Self-diagnosis for cruise control system (CCS)

P1570

17978

and the engine control
unit disabled

Adjust electronic immobiliser to match the engine control unit
=> Electrical System; Repair Group 01; Self-diagnosis for immobiliser

P1579

17987

Throttle valve control unit -J338
Adaptation not started

- Carry out adaptation of throttle valve control unit in accordance with preconditions => Page 24-148

P1600

18008

Voltage supply, terminal 15
Voltage too low

Check supply voltage to engine control unit

P1602

18010

Voltage supply, terminal 30
Voltage too low

.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1603

18011

Control unit defective

Renew engine control unit
.

P1604

18012

Control unit defective 1)

P1606

18014

Rough-road detection/engine specified torque from ABS control unit
Electrical fault in circuit

Check cable connection to ABS control unit
=> Page 24-198

P1609

18017

Crash cut-off was activated

Accident involving activation of airbag or
a final control diagnosis was carried out in airbag control unit, which caused a fault entry in engine control unit (erase fault memory); Notes on crash cut-off => Page 24-196

P1612

18020

Engine control unit incorrectly coded 1) 3)

Check coding or code engine control unit
=> Page 01-97

1)    With this fault, engine control unit switches on EPC warning lamp in dash panel insert. Significance of EPC warning lamp =>24-144.

3)    With this fault the engine control unit switches on exhaust gas warning lamp immediately after detecting fault. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1620

18028

Coolant temperature signal
Open circuit / short to positive


P1621

18029

Coolant temperature signal
Short to earth

Check coolant temperature sender => Page 24-181.

P1622

18030

Coolant temperature signal
Implausible signal


Note on fault codes P1620, P1621 and P1622:

Engine control unit receives "coolant temperature signal" from dash panel insert. If engine control unit detects this signal, boost pressure is reduced.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1624

18032

Request fault lamp on, active

Exhaust-related fault from gearbox control unit, exhaust gas warning lamp (MIL) is switched on by gearbox control unit

P1626

18034

Data bus drive, no message from gearbox-CU

Testing data exchange between engine/ABS/
gearbox control unit
.

Note on fault code P1624:

  • ◆ "Fault lamp" refers to exhaust gas warning lamp (MIL). In simple terms, the engine control unit switches on the "MIL" when faults are detected which cause deterioration of exhaust emissions.
  • ◆ The "MIL" is usually switched on by the engine control unit, as an electrical cable connection only exists between engine control unit and "MIL".
  • ◆ However, it is also possible for the gearbox control unit to detect faults which cause deterioration of exhaust emissions. These faults are also displayed by actuation of "MIL".
  • ◆ If then the gearbox control unit detects a fault which causes engine emissions to deteriorate, the gearbox control unit sends a message to the engine control unit. The engine control unit then switches on the "MIL". Simultaneously, the "fault" P1624 is recorded in the engine control unit as an indication that the "MIL" was not switched on due to an engine problem, but due to a gearbox problem.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1630

18038

Accelerator position sender -G79
Signal too small 1)3)


P1631

18039

Accelerator position sender -G79
Signal too great 1)3)

Check accelerator position sender
.

P1633

18041

Accelerator position sender 2 -G185
Signal too small 1)3)


P1634

18042

Accelerator position sender 2 -G185
Signal too great 1)3)


1)    With this fault, engine control unit switches on EPC warning lamp in dash panel insert. Significance of EPC warning lamp =>24-144.

3)    With this fault the engine control unit switches on exhaust gas warning lamp immediately after detecting fault. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1639

18047

Accelerator position sender -G79/-G185
Implausible signal 1) 3)

Check accelerator position sender
.

P1640

18048

Control unit
Defective 2)

Renew engine control unit
=> Page 24-26

P1645

18053

Drive data bus
No message from four-wheel drive electronics

P1648

18056

Drive data bus
Defective 2)

Testing data exchange between engine/ABS/
gearbox control unit
.

1)    With this fault, engine control unit switches on EPC warning lamp in dash panel insert. Significance of EPC warning lamp =>24-144.

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after two engine re-starts. Significance of MIL warning lamp => 01-3.

3)    With this fault the engine control unit switches on exhaust gas warning lamp immediately after detecting fault. Significance of MIL warning lamp => 01-3.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1649

18057

Drive data bus
No message from ABS control unit

Interrogate ABS fault memory
=> Running Gear Self-diagnosis for ABS, ESP; Repair Group 01; Interrogating fault memory
Testing data exchange between engine/ABS/
gearbox control unit
.

P1650

18058

Drive data bus
No message from dash panel

Check data exchange via bus system => Page 24-201.

P1654

18062

Read out fault memory of dash panel insert

Read out fault memory of dash panel insert

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1676

18084

Electrical throttle actuator fault lamp -K132
Electrical fault in circuit 1)

Significance of the EPC control lamp
.

P1677

18085

Electrical throttle actuator fault lamp -K132
Short to positive 1)


P1690

18098

Fault lamp for self-diagnosis -K83
Electrical fault in circuit 2)

Check wiring from engine control unit to exhaust gas warning lamp => Page 01-3.

P1693

18101

Fault lamp for self-diagnosis -K83
Short to positive 2)

1)    With this fault, engine control unit switches on EPC warning lamp in dash panel insert. Significance of EPC warning lamp =>24-144.

2)    With this fault the engine control unit only switches on exhaust gas warning lamp (MIL), if fault has been re-detected after engine re-start. Significance of MIL warning lamp => 01-3.

Note:

The fault lamp for electrical throttle activation - K132 is also known as the EPC control lamp.

Fault code

Fault readout

Fault remedy

SAE

V.A.G

P1851

18259

Data bus drive, no message from ABS-CU

P1853

18261

Drive data bus
Implausible message from ABS-CU

Interrogate ABS fault memory
=> Running Gear Self-diagnosis for ABS, ESP; Repair Group 01; Interrogating fault memory

P1854

18262

Data bus drive hardware defective

Testing data exchange between engine/ABS/
gearbox control unit
.

Final control diagnosis > < Fault codes up to fault code P1330 (17738)