Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 143
DTC /
Descrip‐
tion
Monitor
Strategy
Descrip‐
tion
Malfunction Crite‐
ria and Threshold
Value
Secondary Parame‐
ters with Enable
Conditions
Monitor‐
ing Time
Length
MIL Il‐
lum.
Component Diag‐
nostic Procedure
P0172
System
Too
Rich
Bank 1
Fuel Sys‐
tem, Sys‐
tem Too
Rich
• Lambda con‐
troller output <
-35.0 %
• Lambda control
closed loop
• Mass air flow >
60.0 mg/rev
• Engine speed >
576 RPM
• ECT @ cylinder
head > 20° C
• IAT at intake
manifold > -48° C
• AAT > -48° C
• Oil dilution not
detected
• And
• Evap purge valve
closed
• Or
• Canister load <=
1.20 [-]
• Evap purge flow
at max. value
• Or
• Depending on
canister purge
min:
• Lower limit of
lambda controller
output n.a.
• Or
• Upper limit of
lambda controller
output n.a.
• And
• Evap purge flow
at min. value
• 60 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the Oxy‐
gen Sensor 1
Before Catalytic
Converter -
GX10- . Refer to
.
– Check the Oxy‐
gen Sensor 1 Af‐
ter Catalytic
Converter -
GX7- . Refer to
– Check the Fuel
Injectors . Refer
to
– Check the Evap‐
orative Emission
System for con‐
tamination. Re‐
fer to appropri‐
ate repair man‐
ual.
P0190
Fuel
Pres‐
sure
Regula‐
tor 1
Control
Circuit/
Open
Fuel Sys‐
tem Pres‐
sure Sen‐
sor High
Pressure
Side
Short To
Battery /
Open Cir‐
cuit
• High fuel pres‐
sure sensor
voltage > 4.80
V
• 2.0 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the Fuel
Pressure Sen‐
sor - G247- . Re‐
fer to
– Check the fuel
pressure. Refer
to appropriate
repair manual.
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
245