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

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I<br />

Engine management<br />

Model: A2 A363 80 1,612,012,6/2,8 80 1,9 TDI (07193 -+) A4lS4<br />

100lA6 1,8/2,012,612,8/4,2 A6 2,5 TDI A6lS61Allroad A8lS8<br />

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

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

5-digit<br />

16522<br />

16523<br />

16525<br />

16534<br />

-<br />

-<br />

-<br />

-<br />

16535<br />

I -<br />

16536<br />

16537<br />

I6538<br />

I -<br />

16540<br />

1 6542<br />

16543<br />

16545<br />

16554<br />

16556<br />

16557<br />

16559<br />

16575<br />

16576<br />

16577<br />

-<br />

-<br />

I -<br />

-<br />

-<br />

I -<br />

-<br />

-<br />

-<br />

-<br />

-<br />

-<br />

-<br />

-<br />

Heated oxygen sensor (H02S) 2,<br />

bank 1 - high voltage<br />

Heated oxygen sensor (H02S) 2,<br />

bank 1 - slow response<br />

Heated oxygen sensor (H02S) 2,<br />

bank 1 - no activity detected<br />

Heated oxygen sensor (H02S) 2,<br />

bank 1 - heater circuit malfunction<br />

Heated oxygen sensor (H02S) 1,<br />

bank 2 - circuit malfunction<br />

Heated oxygen sensor (H02S) 1,<br />

bank 2 - low voltage<br />

Heated oxygen sensor (H02S) 1,<br />

bank 2 - high voltage<br />

Heated oxygen sensor (H02S) 1,<br />

bank 2 - slow response<br />

Heated oxygen sensor (H02S) 1,<br />

bank 2 - no activity detected<br />

Heated oxygen sensor (H02S) 2,<br />

bank 2 - circuit malfunction<br />

Heated oxygen sensor (H02S) 2,<br />

bank 2 - low voltage<br />

Heated oxygen sensor (H02S) 2,<br />

bank 2 - high voltage<br />

Heated oxygen sensor (H02S) 2,<br />

bank 2 - slow response<br />

Heated oxygen sensor (H02S) 2,<br />

bank 2 - no activity detected<br />

Heated oxygen sensor (H02S) 2,<br />

bank 2 - heater circuit malfunction<br />

Fuel trim (FT), bank 1 - malfunction<br />

System too lean, bank 1<br />

System too rich, bank 1<br />

Fuel trim (FT), bank 2 - malfunction<br />

/ System too lean. bank 2<br />

System too rich, bank 2<br />

Fuel rail pressure (FRP) sensor - range1<br />

performance problem<br />

Fuel rail pressure (FRP) sensor - low input<br />

Fuel rail pressure (FRP) sensor - high<br />

input<br />

Probable cause<br />

Wiring short to positive, H02S<br />

Heating inoperative, wiring, H02S<br />

I Wiring, H02S<br />

Wiring, H02S<br />

Wiring, H02S<br />

I Wiring short to earth, HO2S<br />

Wiring short to positive, H02S<br />

Heating inoperative, wiring, H02S<br />

I Wiring, H02S<br />

Heating inoperative, wiring, H02S<br />

Wiring short to earth, exhaust leak, H02S<br />

Wiring short to positive, H02S<br />

Heating inoperative, wiring, H02S<br />

I Wiring, HO2S<br />

Wiring, H02S<br />

Intake leak, AIR system, fuel pressurelpump,<br />

injector(s), EVAP canister purge valve, H02S<br />

lntakelexhaust leak, AIR system, MAP sensor,<br />

MAF sensor, fuel pressurelpump, injector(s),<br />

EVAP canister purge valve, H02S<br />

EVAP canister purge valve, fuel pressure,<br />

injector(s), H02S<br />

Fuel pressurelpump, injector(s), AIR system,<br />

hose connection(s), intake leak<br />

Fuel pressurelpump, injector(s), intakelexhaust<br />

leak, AIR system, hose connection(s)<br />

Fuel pressure, injector(s), EVAP canister purge<br />

valve<br />

Wiring, FRP sensor<br />

Wiring short to earth, FRP sensor<br />

Wiring short to positive, FRP sensor<br />

1 '04 1 Eng~ne<br />

management<br />

/<strong>Autodata</strong>

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