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

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Engine management<br />

Model: A2 A3lS3 80 1,6/2,012,612,8 80 1,9 TDI (07193 -+) A4lS4<br />

100lA6 1,8/2,012,6/2,8/4,2 A6 2,5 TDI A6lS61Allroad A81S8<br />

CoupelCabriolet 1,8/2,0/2,6/2,8 Cabriolet 1,9 TDI TT<br />

VAG<br />

5-digit<br />

type<br />

17809<br />

1781 0<br />

17811<br />

1781 2<br />

17815<br />

17816<br />

1781 7<br />

17818<br />

1781 9<br />

17822<br />

17823<br />

17824<br />

17828<br />

17829<br />

I EOBD type I <strong>Fault</strong> location<br />

PI401<br />

PI402<br />

PI403<br />

PI404<br />

PI407<br />

PI408<br />

PI409<br />

PI410<br />

PI411<br />

Exhaust gas recirculation (EGR) valve1<br />

solenoid, bank 1 - short to earth<br />

Exhaust gas recirculation (EGR) valve1<br />

solenoid, bank 1 - short to positive<br />

Exhaust gas recirculation (EGR) system -<br />

control difference<br />

Exhaust gas recirculation (EGR) system -<br />

basic setting<br />

Exhaust gas recirculation temperature<br />

(EGRT) sensor - low input<br />

Exhaust gas recirculation temperature<br />

(EGRT) sensor - high input<br />

Evaporative emission (EVAP) canister purge<br />

valve - circuit malfunction<br />

Probable cause<br />

Wiring short to earth, EGR valve<br />

Wiring short to positive, EGR valvelsolenoid<br />

17830 1 PI422 Secondary air injection (AIR) valve1 Wiring short to positive, AIR valvelsolenoid<br />

solenoid - short to positive<br />

17831<br />

Secondary air injection (AIR) system, Hose connection(s), AIR valvelsolenoid<br />

bank 1 - insufficient flow detected<br />

17833<br />

17834<br />

17835<br />

17836<br />

17837<br />

17838<br />

17839<br />

17840<br />

I<br />

I<br />

PI414<br />

PI415<br />

PI416<br />

PI420<br />

PI421<br />

PI425<br />

PI426<br />

PI427<br />

PI428<br />

PI429<br />

PI430<br />

PI431<br />

PI432<br />

Evaporative emission (EVAP) canister purge<br />

valve - short to positive<br />

Secondary air injection (AIR) system,<br />

bank 2 - insufficient flow detected<br />

Secondary air injection (AIR) system,<br />

bank 2 - leak detected<br />

Exhaust gas recirculation (EGR) valve<br />

position sensor - lower limit exceeded<br />

Exhaust gas recirculation (EGR) valve<br />

position sensor - upper limit exceeded<br />

Secondary air injection (AIR) valve1<br />

solenoid - circuit malfunction<br />

Secondary air injection (AIR) valve1<br />

solenoid - short to earth<br />

Secondary air injection (AIR) system,<br />

bank 1 - leak detected<br />

Evaporative emission (EVAP) canister purge<br />

valve - short to earth<br />

Evaporative emission (EVAP) canister purge<br />

valve - open circuit<br />

Vacuum pump, brakes - short to positive<br />

Vacuum pump, brakes - short to earth<br />

Vacuum pump, brakes - open circuit<br />

Vacuum pump, brakes - open circuitlshort<br />

to positive<br />

Vacuum pump, brakes - open circuitlshort<br />

to earth<br />

Secondary air injection (AIR) valve1<br />

solenoid - open circuit<br />

Basic setting not carried out, EGR system<br />

Basic setting not carried out, EGR system<br />

Wiring short to earth, EGRT sensor<br />

Wiring short to positive, earth wire defective,<br />

EGRT sensor<br />

Wiring, EVAP canister purge valve<br />

Wiring short to positive, EVAP canister purge<br />

valve<br />

Intake leak, hose@) blockedlleaking,<br />

AIR valvelsolenoid<br />

Intake leak, hose(s) leaking, AIR valvelsolenoid<br />

Basic setting not carried out<br />

Basic setting not carried out<br />

Wiring, AIR solenoid<br />

Wiring short to earth, AIR valvelsolenoid<br />

AIR valve, exhaust leak<br />

Wiring short to earth, EVAP canister purge valve<br />

Wiring open circuit, EVAP canister purge valve<br />

Wiring short to positive, vacuum pump<br />

Wiring short to earth, vacuum pump<br />

Wiring open circuit, vacuum pump<br />

Wiring open circuitlshort to positive, vacuum<br />

pump<br />

Wiring open circuitlshort to earth, vacuum pump<br />

Wiring open circuit, fuse, AIR valvelsolenoid

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