TT011906

Technical Tip
Transaction No:
2056714/1
Release date:
10/18/2019
01-19-06TT - EVAP Canister Purge Valve - N80- Leak Checking with Faults
P0441, P0442, P0455, P0456
ATTENTION:
THIS IS A TECH TIP, NOT A TECHNICAL BULLETIN.
TECH TIPS ARE NOT ASSOCIATED WITH WARRANTY CLAIMING.
Applicable Vehicles
Model(s)
Jetta
Year
Eng. Code
Trans. Code
VIN Range From
VIN Range To
2013-2019
1.4T
(CNLA, CZTA,
DGXA, DJXA)
All
All
All
Revision Table
Instance Number
Published Date
Version Number
2056714/1
10/18/2019
01-19-06TT
Reason For Update
Original publication.
Technical Background
EVAP Canister Purge Regulator Valve 1 -N80- is under the Intake Manifold making it difficult to diagnose.
Service


Engine off.
Disconnect EVAP line connection to -N80- EVAP
Canister Purge Regulator Valve 1, beneath
Coolant Expansion Tank - See figure 1.
Figure 1.
1
Technical Tip
Transaction No:
2056714/1
Release date:
10/18/2019
01-19-06TT - EVAP Canister Purge Valve - N80- Leak Checking with Faults
P0441, P0442, P0455, P0456

Use the VAG1318 pressure gauge kit to
assemble an adaptor using tool numbers;
VAG1318/24, VAG1318/11 and the female to
female adaptor for the pressure gauge - See
figure 2.


Install the adaptor to the EVAP line connection to
EVAP Canister Purge Regulator Valve 1 -N80-.
Connect VAS6213 vacuum pump to the adaptor.
See figure 3.
Disconnect the electrical connector from EVAP
Canister Purge Valve -N80-.
Start engine and allow it to idle.

Monitor the reading on the vacuum gauge.
Figure 2


The reading should be at 0 PSI or higher (no vacuum
should be measured).


If vacuum is present, replace -N80- EVAP
Canister Purge Regulator Valve 1.
Perform leakage test to verify there are no further
issues
Figure 3
Additional Information
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