GROUP

NUMBER
19-01-030H

CAMPAIGN

DATE

Technical Service Bulletin

MODEL

OCTOBER 2019

IONIQ HYBRID
(AE HEV)

NVLD AIR FILTER KIT REPLACEMENT
(SERVICE CAMPAIGN T4C)

SUBJECT:

*** Dealer Stock and Retail Vehicles ***
Dealers must perform this Service Campaign on all affected vehicles prior to customer retail delivery
and whenever an affected vehicle is in the shop for any maintenance or repair.
When a vehicle arrives at the Service Department, access Hyundai Motor America's "Warranty
Vehicle Information" screen via WEBDCS to identify open Campaigns.
Description:
Certain 2017-2019 vehicles may experience check engine light “ON” with the following DTC stored:


DTC P0456 - Evaporative System (EVAP) - Very Small Leak

These conditions primarily occur in the California coastal areas that are subject to marine layer cloud
cover. Salt particulate deposit can form inside the Natural Vacuum Leak Detection (NVLD) which
may cause intermittent operation prompting the DTC P0456 and the check engine light “ON”.
This bulletin provides the procedure to install a new Air Filter Kit with an updated filter to help
prevent entry of the salt particulates.
In addition, vehicles with check engine light “ON” and DTC P0456 found stored in the Engine Control
Module (ECM) must also replace the NVLD part.
APPLICABLE VEHICLES: Certain 2017-2019 Ioniq Hybrid (AE HEV)
Parts Information:
MODEL

PART NUMBER

DESCRIPTION

31450-G2501QQH

AIR FILTER KIT

Ioniq hybrid
(AE HEV)

31480-4R100QQH

SENSOR ASSYPRESSURE
(NVLD)

PHOTO

REMARK

All vehicles

Replace only
when check
engine light “ON”
and DTC P0456
found stored in
the ECM

Circulate To: Service Manager, Warranty Manager, Service Advisors, Technicians, Fleet Repair

SUBJECT:

NVLD AIR FILTER KIT REPLACEMENT (SERVICE CAMPAIGN T4C)

Warranty Information:
MODEL

Ioniq Hybrid
(AE HEV)

OP CODE

OPERATION

OP
TIME

CAUSAL
P/N

NATURE CAUSE
CODE
CODE

90C059R0

AIR FILTER KIT
REPLACEMENT

0.5

31450G2501QQH

I3A

ZZ3

90C059R1

AIR FILTER KIT &
NVLD REPLACEMENT

1.0

314804R100QQH

I3A

ZZ3

NOTE 1: Submit claim on Campaign Claim Entry Screen.
NOTE 2: If a part is found in need of replacement while performing this Service Campaign and the affected
part is still under warranty, submit a separate claim using the same Repair Order Number and the same Causal
Part Number as the Campaign Claim. If the affected part is out of warranty, submit a Prior Approval Request
for goodwill consideration prior to performing the work.

Service Procedure:
Perform the following repair sequence based on the result:

TSB #: 19-01-030H

Page 2 of 7

SUBJECT:

NVLD AIR FILTER KIT REPLACEMENT (SERVICE CAMPAIGN T4C)

A). Air Filter Kit Replacement:
1.

Lift the vehicle and remove the rear LH tire &
wheel (A).

2.

Remove the rear LH wheel guard (B).

3.

Make note of the customer radio presets.
Pull forward the driver’s side rear seat to
locate the 12V battery service disconnect
plastic panel as shown.
Pull out the panel and disconnect the 12V
battery service disconnect as shown.

4.

Open the fuel filler door and loosen the filler
neck mounting bolts (C).

TSB #: 19-01-030H

Page 3 of 7

SUBJECT:

5.

NVLD AIR FILTER KIT REPLACEMENT (SERVICE CAMPAIGN T4C)

Loosen the fuel tank band (D) mounting nuts.
NOTE:
Use a jack stand to support the fuel tank.

6.

Loosen the mounting bolt (E) and the
mounting clip (F) of the filler neck assembly.

7.

Disconnect the connector (G).

8.

Disconnect the mounting clip (H).

9.

Disconnect the mounting clip (I).

TSB #: 19-01-030H

Page 4 of 7

SUBJECT:

NVLD AIR FILTER KIT REPLACEMENT (SERVICE CAMPAIGN T4C)

10. Separate the filler neck assembly as shown.

11. Release the mounting clamp (J) of the filler
neck assembly to disassemble the hose.

12. Release the air filter hose clamp (K), and
disconnect the air drain case.

13. Remove the 2 mounting bolts (L) from the air
filter assembly.

TSB #: 19-01-030H

Page 5 of 7

SUBJECT:

NVLD AIR FILTER KIT REPLACEMENT (SERVICE CAMPAIGN T4C)

14. Replace with the new Air Filter Kit.
NOTE:
- Replacement Air Filter Kit includes CCV,
extension wire and upper & lower hose

15. Reinstall the removed parts in reverse order
of removal.

B). NVLD Replacement:
NOTE: Only perform these steps in event of
check engine light was “ON” with DTC P0456
found stored in the ECM.
1.

Loosen the 3 bracket mounting bolts (M)
from the NVLD.

M

2.

Release the upper and lower hose clamps
(N) of the NVLD to disconnect the hoses.
N

TSB #: 19-01-030H

Page 6 of 7

SUBJECT:

NVLD AIR FILTER KIT REPLACEMENT (SERVICE CAMPAIGN T4C)

3.

Disconnect the NVLD connector (O) to
detach the part.

4.

Replace the NVLD.

5.

Reinstall the removed parts in reverse order
of removal.

O

Restore the customer radio presets.

C). GDS Evap Leakage Test:
Perform GDS Evap Leakage Test according
to the GDS instructions.
This will confirm that the installation of parts
and hoses are secure without a system
vacuum leak.

TSB #: 19-01-030H

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