Service & Repair Manual

01-28
DTC DTC text Corrective action
SAE VAG
P0441 16825 Tank ventilation
system
Throughput faulty
1)
- Check Evaporative Emission (EVAP) Canister Purge Regulator Valve, perform
output Diagnostic Test Mode (DTM) Page 01-56
P0442 16826 Tank ventilation
system
Small leak
detected
1)
- Checking fuel supply and ventilation systems for leaks
P0455 16839 Tank ventilation
system
Large leak
detected
1)
Repair Manual, Engine Mechanical, Repair Group 20; Evaporative Emissions
(EVAP) System Diagnosis using KLI9210 EVAP Tester, test EVAP system.
P0456 16840 Tank ventilation
system
Pinhole leak
detected
1)
Repair Manual, Engine Mechanical, Repair Group 20; EVAP canister system
components, servicing; tank leak diagnostic, performing.
1)
For these malfunctions, ECM does not switch on the Malfunction Indicator Lamp (MIL) unless malfunction is recognized
again after another engine start. Meaning of Malfunction Indicator Lamp (MIL) Page 01-3 .
Pa
g
e 17 of 52Check DTC Memor
y
(
function 02
)
and Erase DTC Memor
y
(
function 05
)
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