Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 165
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
P2177
System
Too
Lean Off
Idle
Bank 1
Fuel Sys‐
tem Di‐
rect Fuel
Injection
System
Too Lean
• Adaptive value
>= 28.0 %
• MAF > 60.0 mg/
rev
• ECT @ cylinder
head > 20° C
• IAT @ manifold >
-48° C
• AAT > -48° C
• Lambda set point
0.95 – 1.05 [-]
• Lambda control
closed loop
• Integrated MAF
>= 600.0 –
10,000.0 g
• Fuel mass 15.01
– 50.00 mg/rev
• Engine speed
1,024 – 3,744
rpm
• Low dynamic
conditions:
• Diff. engine
speed vs. aver‐
aged engine
speed for engine
speed dynamic
detection < 60 –
130 rpm
• Diff. air mass vs.
averaged air
mass for load dy‐
namic detection <
16.00 – 30.01 mg/
rev
• Diff. between ref‐
erence and ac‐
tual fuel pres‐
sure, high side <=
2000.10 kPa
• Integrated air
mass > 5.0 – 25.0
g
• And
• Evap purge valve
closed or canister
load <= 1.20 [-]
• Evap purge flow
at max. value
• Or
• Dependence on
canister purge
min:
• 5.0 s
• Con‐
tinu‐
ous
• 2
DCY
– Check the intake
and vacuum ho‐
ses visually for
leaks. Check the
Positive Crank‐
case Ventilation
visually. Also
make sure the
oil dipstick is
properly se‐
cured.
– Listen to and vis‐
ually inspect the
exhaust system
to insure there
are no leaks.
– 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 In‐
take Manifold
Sensor - GX9- .
Refer to
.
– Check the EVAP
Canister Purge
Regulator Valve
1 - N80- . Refer
to
.
– Check the Fuel
Injectors . Refer
to
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
3. Diagnosis and Testing
333