Skoda OCTAVIA 2004 Workshop Manual page 23

OCTAV1A
Readout on V.A.G 1552
Fault number
old new
01265 17810
Exhaust gas
recirculation valve
-N18
Short-circuit to
positive
17849
Line interrup-
tion/short-circuit
to earth
01266 18026
Glow plug relay
-J52
Short-circuit to
positive
18027
Line interrup-
tion/short-circuit
to earth
01268 17969
Metering adjuster
-N146
Control differ-
ence (deviation)
17970
upper limit value
17971
lower limit value
Edition 01.04
S00.5111.56.20
Self-Diagnosis
Possible cause of fault
♦ Short-circuit to positive
♦ Line interruption
♦ Solenoid valve defective
♦ Short-circuit to earth
♦ Short-circuit to positive
♦ Line interruption
♦ Relay defective
♦ Short-circuit to earth
♦ Injection pump defective,
leaking
♦ Line interruption or short-
circuit
♦ Metering mechanism ad-
justed
♦ Metering mechanism ad-
justed
Possible effects
♦ No exhaust gas
recirculation
♦ No exhaust gas
recirculation
♦ Too much exhaust gas
recirculation
♦ Reduced performance,
black smoke
♦ Glow plug system not op-
erational
♦ Glow plug system not op-
erational
♦ Glow plug system not op-
erational
♦ Incorrect driving behaviour
♦ Engine stoppage
♦ Jerking, poor performance
♦ Black smoke
♦ Irregular engine running
Rectifying fault
- Check exhaust gas recir-
culation valve -N18
⇒ page 23-24
- Check glow plug relay
-J52
⇒ Binder: Current Flow Dia-
grams, Electrical Fault
Finding and Fitting Loca-
tions
- Check metering adjuster
-N146 ⇒ page 23-45
- Replace injection pump
⇒ page 23-8
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