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

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Model: A2 A3lS3 80 1,6/2,012,612,8 80 1,9 TDI (07/93+) A4lS4<br />

1001A6 1,812,012,612,8/4,2 A6 2,s TDI A6lS61Allroad A8lS8<br />

CoupelCabriolet 1,8/2,0/2,612,8 Cabriolet 1,9 TDI lT<br />

Engine management I<br />

VAG type I EOBD type 1 <strong>Fault</strong> location<br />

5-digit<br />

17841<br />

17842<br />

17843<br />

17844<br />

17845<br />

17846<br />

17847<br />

17848<br />

17849<br />

17850<br />

17851<br />

17852<br />

17858<br />

17859<br />

17860<br />

PI433<br />

PI434<br />

PI435<br />

PI436<br />

PI437<br />

PI438<br />

P 1439<br />

PI440<br />

PI441<br />

PI442<br />

PI443<br />

PI444<br />

PI450<br />

PI451<br />

PI452<br />

PI454<br />

PI455<br />

Secondary air injection (AIR) pump relay -<br />

open circuit<br />

Secondary air injection (AIR) pump relay -<br />

short to positive<br />

Secondary air injection (AIR) pump relay -<br />

short to earth<br />

Secondary air injection (AIR) pump relay -<br />

circuit malfunction<br />

Exhaust gas recirculation (EGR) valve1<br />

solenoid, bank 2 - short to positive<br />

Exhaust gas recirculation (EGR) valve1<br />

solenoid, bank 2 - open circuitlshort to<br />

earth<br />

Exhaust gas recirculation (EGR) valve<br />

position sensor - basic setting<br />

Exhaust gas recirculation (EGR)<br />

valve - open circuit<br />

Exhaust gas recirculation (EGR) valve1<br />

solenoid, bank 1 - open circuitlshort to<br />

earth<br />

Exhaust gas recirculation (EGR) valve<br />

position sensor - high input<br />

Exhaust gas recirculation (EGR) valve<br />

position sensor - low input<br />

Exhaust gas recirculation (EGR) valve<br />

position sensor - rangelperformance<br />

problem<br />

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

short to positive<br />

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

short to earth<br />

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

open circuit<br />

Exhaust gas recirculation temperature<br />

(EGRT) sensor llbank 1 - open circuitl<br />

short to positive<br />

Exhaust gas recirculation temperature<br />

(EGRT) sensor llbank 1 - short to earth<br />

Exhaust gas recirculation temperature<br />

(EGRT) sensor llbank 1 - range1<br />

performance problem<br />

-<br />

Exhaust gas recirculation temperature<br />

(EGRT) control, bank 1 - control limit<br />

reached<br />

Exhaust gas recirculation temperature<br />

(EGRT) sensor 2lbank 2 - open circuitl<br />

short to positive<br />

17866 PI458 Exhaust gas recirculation temperature<br />

(EGRT) sensor 2lbank 2 - short to earth<br />

Probable cause<br />

Wiring open circuit, fuse, AIR pump relay<br />

Wiring short to positive, AIR pump relay<br />

Wiring short to earth, AIR pump relay<br />

Wiring, AIR pump relay<br />

Wiring short to positive, EGR valvelsolenoid<br />

Wiring open circuitlshort to earth,<br />

EGR valvelsolenoid<br />

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

Wiring open circuit, EGR valve<br />

Wiring open circuitlshort to earth, EGR solenoid<br />

Wiring short to positive, EGR valve position<br />

sensor<br />

Wiring short to earth, EGR valve position sensor<br />

Wiring, EGR valve position sensor<br />

Wiring short to positive, AIR relay<br />

Wiring short to earth, AIR relay<br />

Wiring open circuit, AIR relay<br />

Wiring open circuitlshort to positive,<br />

EGRT sensor<br />

Wiring short to earth, EGRT sensor<br />

Exhaust leak, wiring, EGRT sensor<br />

EGRT sensor<br />

Wiring open circuitlshort to positive,<br />

EGRT sensor<br />

Wiring short to earth, EGRT sensor

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