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Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition

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)Engine<br />

management<br />

Model: A2 A31S3 80 1,6/2,0/2,6/2,8 80 1,9 TDI (07193+) A464<br />

1001A6 1,812,012,612,8/4,2 A6 2,s TDI A6IS6IAllroad A81S8<br />

CoupelCabriolet 1,8/2,012,612,8 Cabriolet 1,9 TDI l7<br />

type<br />

5-digit<br />

EOBD type<br />

<strong>Fault</strong> location<br />

Probable cause<br />

18023<br />

18024 1 PI616 ( Glow plug warning lamp - short to positive I Wiring short to positive<br />

I<br />

PI615<br />

Engine oil temperature (EOT) sensor -<br />

rangelperformance problem<br />

Glow plug warning lamp - open circuit/<br />

short to earth<br />

Bulb, wiring open circuiffshort to earth<br />

18026 1 PI618 I Glow plug relay - short to positive 1 Wiring short to positive, glow plug relay<br />

18027<br />

18028<br />

Instrument panel, ECT signal - open<br />

circuit/short to positive<br />

1 earth<br />

lnstrument panel, ECT signal - implausible<br />

signal<br />

CAN data bus - no signal<br />

18029<br />

I<br />

lnstrument panel, ECT signal - short to Wiring short to earth, instrument panel<br />

18030<br />

18031<br />

18032<br />

18033<br />

1<br />

PI 61 9<br />

PI 620<br />

PI623<br />

PI 624<br />

PI625<br />

Glow plug relay - open circuit/short to earth<br />

Engine oil level, wiring, EOT sensor<br />

--<br />

Wiring open circuiffshort to earth, glow plug relay<br />

Wiring open circuiffshort to positive, instrument<br />

panel<br />

Wiring, instrument panel, ECT sensor<br />

18034 1 PI626 1 CAN data bus, TCM - no signal I TCM trouble code(s) stored, TCM incorrectly<br />

18037<br />

18038<br />

18039<br />

18040<br />

18041<br />

18042<br />

18044<br />

Malfunction indicator lamp (MIL) - request<br />

signal active<br />

CAN data bus, TCM - incorrect signal<br />

I I I coded, wiring, matching resistor in ECM<br />

PI629<br />

PI 630<br />

PI631<br />

PI632<br />

PI 633<br />

PI634<br />

CAN data bus, cruise control - no signal<br />

Accelerator pedal position (APP)<br />

sensor 1 - low input<br />

Accelerator pedal position (APP)<br />

sensor 1 - high input<br />

Accelerator pedal position (APP) sensor -<br />

supply voltage<br />

Accelerator pedal position (APP)<br />

sensor 2 - low input<br />

Accelerator pedal position (APP)<br />

sensor 2 - high input<br />

CAN data bus, AC - no signal<br />

- I<br />

I<br />

-<br />

<strong>Trouble</strong> code(s) stored in other system(s), wiring,<br />

matching resistor in ECM<br />

<strong>Trouble</strong> code(s) stored in other system(s)<br />

TCM trouble code@) stored, TCM incorrectly<br />

coded, wiring, matching resistor in ECM<br />

-<br />

AC control module trouble code(s) stored, wiring,<br />

matching resistor in ECM<br />

SRS control module trouble code@) stored,<br />

wiring, matching resistor in ECM<br />

18045 / CAN data bus, electronic CE - no signal code@) stored, wiring, matching resistor<br />

1<br />

PI636<br />

CAN data bus, SRS - no signal<br />

Accelerator pedal position (APP)<br />

sensor 112 - rangelperformance problem<br />

18048 1 PI640 I Engine control module (ECM) - defective I ECM<br />

I8050<br />

18053<br />

18056<br />

PI642<br />

PI 645<br />

PI648<br />

SRS control module - system malfunction<br />

CAN data bus, 4WD - no signal<br />

CAN data bus - defective<br />

Cruise control trouble code@) stored, wiring,<br />

matching resistor in ECM<br />

Wiring short to earth, APP sensor<br />

Wiring short to positive, APP sensor<br />

Operating voltage too highllow, wiring<br />

Wiring short to earth, APP sensor<br />

Wiring short to positive, APP sensor<br />

Wiring, APP sensor<br />

<strong>Trouble</strong> code@) stored<br />

4WD trouble code(s) stored, wiring, matching<br />

resistor in ECM<br />

Wiring, matching resistor in ECM<br />

1 '26 1 Engne<br />

management<br />

[<strong>Autodata</strong>

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