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

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I<br />

Model: Lupo Polo 1,3 PololClassiclEstate GolfNentolBoralCabrio<br />

Beetle Passat Corrado (08192-95) Sharan<br />

CaddylPickup TransporterlCaravelle LT 2,5 SDl/TDl<br />

Engine management I<br />

type<br />

5-digit<br />

16521<br />

16522<br />

16523<br />

16524<br />

EOBD type<br />

I -<br />

16525<br />

I -<br />

16534<br />

16535<br />

16536<br />

16537<br />

16538<br />

16540<br />

16541<br />

16542<br />

-<br />

-<br />

-<br />

I -<br />

-<br />

-<br />

-<br />

16543<br />

I -<br />

16544<br />

16545<br />

16554<br />

16555<br />

16556<br />

16557<br />

-<br />

-<br />

-<br />

-<br />

-<br />

-<br />

I -<br />

I -<br />

I6558<br />

I -<br />

16559<br />

16575<br />

-<br />

-<br />

I<br />

I<br />

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

Probable cause<br />

Heated oxygen sensor (H02S) 2, bank 1 - Wiring short to earth, exhaust leak, H02S<br />

low voltage<br />

Heated oxygen sensor (H02S) 2, bank 1 - Wiring short to positive, H02S<br />

high voltage<br />

Heated oxygen sensor (H02S) 2, bank 1 - Heating inoperative, wiring, H02S<br />

slow response<br />

Heated oxygen sensor (H02S) 2, bank 1 - Wiring, H02S<br />

no activity detected<br />

Heated oxygen sensor (H02S) 2, bank 1 - Wiring, H02S<br />

heater circuit malfunction<br />

Heated oxygen sensor (H02S) 1, bank 2 - Wiring, H02S<br />

circuit malfunction<br />

Heated oxygen sensor (H02S) 1, bank 2 - Wiring short to earth, H02S<br />

low voltage<br />

Heated oxygen sensor (H02S) 1, bank 2 - Wiring short to positive, H02S<br />

high voltage<br />

Heated oxygen sensor (H02S) 1, bank 2 - Heating inoperative, wiring, H02S<br />

slow response<br />

Heated oxygen sensor (H02S) 1, bank 2 - Wiring, H02S<br />

no activity detected<br />

Heated oxygen sensor (H02S) 2, bank 2 - Heating inoperative, wiring, H02S<br />

circuit malfunction<br />

Heated oxygen sensor (H02S) 2, bank 2 - Wiring short to earth, exhaust leak, H02S<br />

low voltage<br />

Heated oxygen sensor (H02S) 2, bank 2 - Wiring short to positive, H02S<br />

high voltage<br />

Heated oxygen sensor (H02S) 2, bank 2 - Heating inoperative, wiring, H02S<br />

slow response<br />

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

no activity detected<br />

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

heater circuit malfunction<br />

I Fuel trim (FT), bank I - 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 />

I I I<br />

Wiring, H02S<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, hose<br />

connection(s), intake leak<br />

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

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

- I System too rich, bank 2 I Fuel pressure, injector(s), EVAP canister purge<br />

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

performance ~roblem<br />

16576 1 - ( Fuel rail pressure (FRP) sensor - low input 1 Wiring short to earth, FRP sensor<br />

16577 1 - ( Fuel rail pressure (FRP) sensor - high input I Wiring short to positive, FRP sensor<br />

valve<br />

Wiring, FRP sensor

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