GROUP

MODEL

Subsequent Repair Action

2019MY
Optima (JFa),
Sorento (UMa), and
Sportage (QL)

NUMBER

DATE

PI1805Y/Z

January 2024

SUBSEQUENT REPAIR ACTION
SUBJECT:

ENGINE REPLACEMENT INSTRUCTIONS
FOR DTC P1326 (PI1805Y/Z)

This bulletin provides information related to the Technical Service Bulletin previously published in (PI1805)
titled “Knock Sensor Detection System - ECU Logic Improvement” for certain 2019MY Optima (JFa), Sorento
(UMa) and Sportage (QL) vehicles equipped with a 2.4L GDI or 2.0L T-GDI engine (Refer to page 9 for
production dates). Specifically, this bulletin provides instructions on which procedures to follow if, after
installation of the KSDS, any one of the subject vehicles below return to the dealer with Diagnostic Trouble
Code (DTC) P1326 (Knock Signal Range/Performance).
If DTC P1326 is present, first perform the bearing clearance inspection with the Engine Bearing Clearance
Tester device (SST KQ231-2T110QQK). This device checks the rod bearing clearance by placing air and
vacuum into the cylinder block. Measure the bearing clearance and follow the instructions in this bulletin.
Before conducting the procedure, verify the vehicle is included in the list of affected VINs.
Refer to the flowcharts found on pages 2-6, then follow the appropriate procedure as outlined in this bulletin.
Note: Certain limitations may apply to this Product Improvement Campaign coverage. Refer to Warranty
Bulletin 2024-02 for more details.

 IMPORTANT
A Vehicle Diagnosis Number (VDN) must be created with or without DTC P1326, after scanning for
DTCs, prior to performing PI1805Y/Z. If a VDN is not created, Warranty claim submission issues
WILL occur.

 NOTICE
To assure complete customer satisfaction, always remember to refer to KDealer+ Warranty
Coverage (validation) Inquiry Screen (Service → Warranty Coverage → Warranty Coverage Inquiry)

for a list of any additional campaigns that may need to be performed on the vehicle before returning
it to the customer.

A printed copy is for reference only; publication information can be updated at any time.
Always refer to KGIS for the latest information. After logging in kdealer.com, the newest technical
publications are listed in ‘Service Releases’ and has the latest service information that has been released.

Page 2 of 17

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1805Y/Z)

SUBJECT:

Main Flowchart:
Vehicle In
Validate Warranty
Confirm customer complaint as listed on the RO and
note on the RO if vehicle was towed in.

Oil Dipstick/Oil Cap & Oil
Filler Opening Inspection
Using KDS, record video and
take (3) photos of:
Oil Inspection
(NG)

1. Oil Dipstick Reading
2. Inside Oil Filler Cap
3. Inside Oil Filler Opening
Oil Inspection
(OK)

(Refer to Page 3 & Appendix 1
for Additional Instructions)

Open Techline
Repair Assistance (RA)
Be prepared to submit all
required documentation.
(Refer to Appendix 1)

KSDS Installed or
DTC P1326 Stored

Refer to the applicable
Flowchart A,B or C
(Per Appendix 2)

Maintenance Verified

OK

Techline Verification of
Proper Maintenance
Per Appendix 1

Request Maintenance
Records from Customer
In Writing
Receipt Due Within 10 Days

NG

No Repair Coverage
Diagnosis Claim Only
P180S

Vehicle Out

Follow the applicable flowchart upon documenting customer complaint for one (1) of the three (3)
following concerns from Main Flowchart:
A.

DTC P1326 Stored… (Page 4)

B.

ENGINE NOISE… (Page 5)

C.

ENGINE, NO CRANK… (Page 6)

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: PI1805Y/Z Multiple Models January 2024

Page 3 of 17
SUBJECT:

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1805Y/Z)

Oil Condition and Oil Level Inspection: (Main Flowchart)
1.

Start video showing vehicle and move in
towards the dash VIN tag.

2.

Measure and record oil dip stick level.

3.

Note oil dip stick reading on the RO.

4.

Take a picture of the oil reading on dipstick.

5.

Inspect the inner/bottom of the oil cap and
inside oil filler opening.
Record/Note findings: Oil sludge, varnish,
burnt oil smell condition(s) found.

6.

Inspect the inner/bottom of the oil cap and
inside oil filler opening.
Record/Note findings: Oil sludge, varnish,
burnt oil smell condition(s) found.

7.

Take a picture of both, the bottom of the oil
cap and oil filler opening.

 NOTICE
If oil lacquering, oil sludge or oil
varnish is present, then the engine is
therefore suspect to maintenance
neglect.

Review

of

the

vehicle's

maintenance history is required.

Oil Level Measurement: (Flowcharts B & C → PWA Request)
1.

Remove oil filler cap, remove oil drain plug
and drain oil into the measuring container
SST067BUCK and check oil level.

2.

Record oil level reading on the RO.

3.

Take photo of the drained oil container using
KDS and attach to warranty claim PWA
request.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: PI1805Y/Z Multiple Models January 2024

Page 4 of 17
SUBJECT:

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1805Y/Z)

Flowcharts A/B/C:

A. DTC P1326 STORED
Create PI1805Y Claim – No Techline PWA Required

From Main Flowchart
(page 2)

1. Full system DTC scan and
generate VDN
2. Save Freeze frame Data

Perform BCT

BCT Result

PASS
(OK)

Repair Completed

Replace
Knock Sensor
Page 8.

No

KSDS Software
Update available

NO PASS
(NG)

Check for updated
software

Yes
KDS Software
Update

Yes

Replace
Engine

KSDS Software
Update available

Check for updated
software

No

Note: If any concerns arise during/after completing the flow chart(s), open a Techline case online.

 IMPORTANT
Due to recent updates to KDS, always follow the BCT procedure instructions outlined in KDS. You
may also refer to SST067 for BCT Procedure/Calibration information.

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: PI1805Y/Z Multiple Models January 2024

Page 5 of 17
SUBJECT:

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1805Y/Z)

B. ENGINE NOISE
Techline PWA Required; Diagnosis only Campaign Possible

From Main Flowchart
(page 2)

Check oil level and
document on the RO

Full system DTC scan
and generate VDN.

Perform BCT

PASS
(OK)

BCT Result

NO PASS
(NG)

PWA PROCESS
(Incl. Oil Level
Measurement)

Replace Engine

Yes

Connecting rod
bearing noise

No

Process Completed

No

Software update
available

Diagnosis coverage
only; any required
repairs are to be
completed using
normal service
procedures.
Do Not Submit as a
Campaign Claim.

Check updated
software

Yes

Refer to PI1805
(As Applicable)

PI180S

KDS Software
Update

Note: If any concerns arise during/after completing the flow chart(s), open a Techline case online.

 IMPORTANT
Due to recent updates to KDS, always follow the BCT procedure instructions outlined in KDS. You
may also refer to SST067 for BCT Procedure/Calibration information.

Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.

TSB: PI1805Y/Z Multiple Models January 2024

Page 6 of 17
SUBJECT:

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1805Y/Z)

C. ENGINE NO CRANK
Techline PWA Required; Diagnosis only Campaign Possible

From Main Flowchart
(page 2)

Measure the
remaining oil in the
crankcase.
There must be at
least 1 quart
remaining in the
crankcase.

Full system DTC scan
and generate VDN

Remove engine
drive belt and spark
plugs

Document engine
rotational torque
VIDEO

Check Max.
Torque Value
(94 lb.ft.)

Under
94 lb.ft.

Perform BCT

Over
94 lb.ft.

See Appendix 1
on page __.

Replace Engine
Create
PI1805 Claim

Oil level in the
crankcase was
less than 1 quart.

Process
Completed

PWA PROCESS
(Incl. Oil Level
Measurement)

NO PASS

BCT Result

PASS

No