WITECH Small Leak Verification Test (SLVT) - P0456-EVAP System Small Leak (18-095-21)

WARNING: This page is about the Voyager L, Gas, which is a different variant/trim than selected.

Publication date: 2023-04-15
Reference number: 18-095-21
Supersedes refnos: 18-048-23, 18-089-19

WITECH SMALL LEAK VERIFICATION TEST (SLVT) - P0456-EVAP SYSTEM SMALL LEAK

TECHNICAL SERVICE BULLETIN

Reference Number(s): 18-048-23, Date of Issue: April 15, 2023

CHRYSLER:	2012-2023 (ALL) (Stellantis Group Gas Vehicles)
GROUP:	18 - Vehicle Performance

Superceded Bulletin(s): 18-095-21, Date of Issue: December 17, 2021

VEHICLES AFFECTED

2012 - **2023** (ALL) (Stellantis Group Gas Vehicles)

This bulletin applies to all 2012 - 2023 Stellantis US LLC vehicles with the available wiTECH SLVT.

NOTE: This bulletin supersedes Technical Service Bulletin (TSB) 18-095-21, date of issue December 17, 2021, which should be removed from your files. All revisions are highlighted with **asterisks** and include additional model years and discussion points.

DISCUSSION

In order to verify small leaks are present or to determine the repair correction for the small leak condition, wiTECH has made available a SLVT.

It is mandatory to run the wiTECH SLVT while performing the P0456 diagnostics.

For further explanation on the wiTECH SLVT, please reference the below materials:

Refer to Warranty Bulletin **D-19-23 REV. A** for details associated with the warranty claim processing.
Refer to Warranty Newsletter Volume 5, Issue 10 **published October 2019**.
For additional help with understanding this diagnostic procedure, please reference the Master Tech training course - MTCE1901 - "Master Tech Continuing Education Edition 1 - EVAP System Overview and Diagnosis".

The wiTECH SLVT MUST be run first to verify a leak is present and run after repairing or replacing any components to verify the fix. **This includes PCM Software Updates to correct P0456 concerns.**

A road test will not confirm the repair, as P0456 is only set with multiple engine off and drive cycles, which cannot be reproduced during a dealer visit.
wiTECH SLVT is the only tool currently available to confirm a fix after the repair to assure the vehicle was "Fixed First Visit (FFV)".

When diagnosing the P0456, follow the service diagnostic procedure outlined in Service Library. The diagnostic will also help explain how to interpret the wiTECH SLVT result and determine the best repair solution (Fig. 1) or (Fig. 2) .

POLICY

Information Only