Volkswagen Passat 1995 Official Factory Repair Manual page 1634

Diagnostic Trouble Code (DTC) table
Scan Tool Display
01257 4431
Idle Air Control valve -
N71
Short circuit to
positive
Open circuit/short
circuit to ground
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Possible cause
Short circuit to positive in
wiring or N71
Open circuit or short circuit
to ground in wiring
N71 faulty
Corrective steps
Check N71 Page 01-31
Diagnostic Test Mode
Check wiring together with N71
Page 01-50 , test step 26
Replace N71 if necessary,
24-21 , item 18
Page 21 of 23
01-27
, Output
Page
6/12/2004