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

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Model: A3 80 A4 100lA6 AGIAllroad A8 Coupe<br />

Cabriolet<br />

Transmission 7<br />

18243<br />

18258<br />

18258<br />

18262<br />

18263<br />

18264<br />

18265<br />

I8266<br />

I8269<br />

65535<br />

type I P type <strong>Fault</strong> locatlon Probable cause<br />

I<br />

I<br />

PI850<br />

PI851<br />

PI854<br />

PI 855<br />

PI856<br />

PI 857<br />

Pressure control (PC) solenoid 5 -<br />

short to positive<br />

Engine control module (ECM)ltransmission<br />

control module (TCM) - incorrectly<br />

matched<br />

CAN data bus, ECM - missing<br />

information<br />

CAN data bus, ABS - missing<br />

information<br />

CAN data bus - defective<br />

CAN data bus - software<br />

Engine control module (ECM) -<br />

TP sensor signal<br />

Engine control module (ECM) -<br />

load s~gnal<br />

Engine control module (ECM) -<br />

RPM signal<br />

Engine control module (ECM) -<br />

APP sensor signal<br />

1<br />

I I I<br />

defective<br />

Wiring short to positive, PC solenoid<br />

Incorrect ECMlTCM<br />

Ignition switched ON with TCM disconnected,<br />

wiring, TCM<br />

Ignition switched ON with TCM disconnected,<br />

wiring, TCM, ABS control module, ECM<br />

Wiring, ECM, TCM<br />

Ignition switched ON with TCM disconnected, ECM,<br />

TCM<br />

Wiring, ECM, TCM<br />

ECM, TCM<br />

Wiring, CKPIRPM sensor, ECM, TCM<br />

I Wiring, APP sensor, ECM, TCM<br />

- I Transmission control module (TCM) - 1 Mechanicallhydraulic fault, electricallelectronic<br />

I component, wiring, TCM

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