Volkswagen CJDA Workshop Manual page 63

Indicated on display
00779/P0302
Misfiring detected in cyl.
2
00771/P0303
Misfiring detected in cyl.
3
00772/P0304
Misfiring detected in cyl.
4
00801/P0321
Engine speed sender
-G28-
Implausible signal
00802/P0322
Engine speed sender
-G28-
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
Possible cause of fault Possible effects
◆ Poor compression
values for cylinder 2
◆ Injector for cyl.2
-N31- defective
◆ Poor compression
values for cylinder 3
◆ Injector for cyl.3
-N32- defective
◆ Poor compression
values for cylinder 4
◆ Injector for cyl.4
-N33- defective
◆ Wire open circuit or
wire has short to
earth
◆ -G28- defective or
loose
◆ Metal shavings on
sender wheel, or
◆ Too much clearance
-G28-/sender wheel
Industriemotoren - Industrial Engines 2009 ▶
◆ Slightly irregular en-
gine operation at
idling speed
◆ Slightly irregular en-
gine operation at
idling speed
◆ Slightly irregular en-
gine operation at
idling speed
◆ Limp mode via cam-
shaft is activated, con-
siderably decreased
performance
◆ Exhaust gas recircula-
tion switched off
◆ Torque limiting
◆ Governed speed
◆ Increased idling
speed
◆ Camshaft diagnosis
locked
◆ Smoothness regulator
and jolt damper
switched off
◆ Regeneration sup-
pressed
3
Fault remedy
– Checking compres-
⇒ P age
sion 218.
– Check injector for cyl.
⇒ P age 398
2 -N31-
– Compare learnt val-
ues for zero quantity
calibration (ZFC);
– Checking compres-
⇒ P age
sion 218.
– Check injector for cyl.
⇒ P age 398
3 -N32-
– Compare learnt val-
ues for zero quantity
calibration (ZFC);
– Checking compres-
⇒ P age
sion 218.
– Check injector for cyl.
⇒ P age 398
4 -N33-
– Compare learnt val-
ues for zero quantity
calibration (ZFC);
⇒
– -G28- Check.
"Checking engine
speed sender -G28-"
on page 400
– Check whether sensor
is installed correctly
(clearance between
sensor and sender
wheel, firmly seated)
– Check supply voltage
of sensor (only if sen-
sor is activated),
– Check sensor signal
with engine running
(oscilloscope)
– Check wiring
– Check sender wheel
3 List of fault codes
47