20-FL-010H

GROUP
NUMBER
FUEL SYSTEM
DATE
Technical Service Bulletin
20-FL-010H
MODEL(S)
OCTOBER 2020
Tucson (TL) 2.0L
SUBJECT: TUCSON 2.0L DTC P0420 - ECM UPDATE AND CATALYST REPLACEMENT
Description:
This bulletin provides information related to the repair of DTC P0420 “Catalytic Converter System
Bank 1 - Efficiency Below Threshold” found stored in the Engine Control Module (ECM). The repair
involves performing an ECM Update and replacement of the exhaust manifold catalyst.
Applicable Vehicle:
 2019 Tucson (TL) with 2.0L GDI engine.
ECU Update Event Information:
System Selection: Engine (ECM)
Event #
Description
588*
TL PE 2.0GDI - P0420 DTC IMPROVEMENT
*or any updated later event that is listed.
Parts Information:
Part Name
Part Number
Diagram
28510-2EMN0 (2WD)
MANIFOLD CATALYTIC ASSY
28510-2EPE0 (4WD)
Warranty Information:
Model
Op Code
Operation
Op Time
Causal
Part
Nature
Code
Causal
Code
Tucson (TL)
39131F08
ECM UPGRADE &
EXHAUST MANIFOLD
CATALYST REPLACE
1.1 M/H
39131-2ET**
39133-2ET**
I3T
ZZ3
**Refer to applicable parts catalog for full ECM causal part numbers.
Note: Normal warranty applies.
Circulate To: Service Manager, Warranty Manager, Service Advisors, Technicians, Fleet Repair
SUBJECT:
:
TUCSON 2.0L DTC P0420 - ECM UPDATE AND CATALYST REPLACEMENT
Service Procedure:
1. Scan for DTC in Engine System and confirm that DTC P0420 is found stored.
2. Replace the exhaust manifold catalyst per the Shop Manual instructions.
3. Perform the GDS software event update:
 Refer to TSB 15-GI-001 for the detailed tablet-based Mobile GDS ECU update
procedures.
 Refer to TSB 15-GI-002 for the detailed PC-based GDS ECU update
procedures.
4. Check for Diagnostic Trouble Codes in the ALL menus and erase any DTC.
5. Erase the DTC in the BlueLink system according to TSB 12-BE-005-2.
6. Confirm normal vehicle operation.
NOTICE
You must initially perform the GDS ECU Update in Auto Mode.
 If the ECU Update starts but then fails in Auto Mode, perform the update in Manual Mode to
recover.
TSB #: 20-FL-010H
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TUCSON 2.0L DTC P0420 - ECM UPDATE AND CATALYST REPLACEMENT
WARNING
GDS Vehicle Battery Voltage Warning:
If voltage is below 12 volts as per the below GDS warning, then select Back and
operate the vehicle in Ready mode for at least 20 minutes to ensure an adequate
battery state of charge for reliable update results. Turn ignition back on, and then retry
the ECU update again.
ROM ID Table:
VEHICLE
ENGINE
TRANS
IMMO
EMISSIONS
ECU P/No.
YES
ULEV
39131-2ETF0
ROM ID
OLD
NEW
GGTL-INUAQS00C00
GTL-0NU0AQ100C00
GTL-0NU0AQ000C00
Tucson
(TL PE)
2.0GDI
6AT
NO
ULEV
39133-2ETF0
GGTL-INUAPS00C00
GTL-0NU0AP100C00
YES
ULEV
39131-2ETF1
GGTL-INUAQS00D00
GTL-0NU0AQ100F00
NO
ULEV
39133-2ETF1
GGTL-INUAPS00D00
GTL-0NU0AP100F00
YES
SULEV
39131-2ETF2
GGTL-INSAQS00C00
GTL-0NS0AQ100C00
NO
SULEV
39133-2ETF2
GGTL-INSAPS00C00
GTL-0NS0AP100C00
Manual Mode Password:
MENU
TL PE 2.0GDI -IMMO 39133-2ETF0
TL PE 2.0GDI -IMMO 39133-2ETF1
TL PE 2.0GDI -IMMO 39133-2ETF2
TL PE 2.0GDI +IMMO 39131-2ETF0
TL PE 2.0GDI +IMMO 39131-2ETF1
TL PE 2.0GDI +IMMO 39131-2ETF2
PASSWORD
3320
3321
3322
3326
3327
3328
TSB #: 20-FL-010H
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