NHTSA ID Number: 10239721
Manufacturer Communication Number: PI2104YZ_TSB
TSB/Document Date: 2023-08-02
Summary
SUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2104Y/Z) - This bulletin provides information related to the Technical Service Bulletin previously published in (PI2104) titled "Knock Sensor Detection System - ECU Logic Improvement" for 2014-2016MY Optima (TF HEV) vehicles equipped with Theta 2.4L MPI engine, produced from December 11, 2013 through July 22, 2015. 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).
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TSB/Document ID: PI2104YZ_TSB
Replacement Service Bulletin Number:
MFR Communication Date: 2023-07-05
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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GROUP
MODEL
Subsequent Repair Action
2014-2016MY
Optima (TF HEV)
w/2.4L MPI
NUMBER
DATE
PI2104Y/Z
July 2023
SUBSEQUENT REPAIR ACTION
SUBJECT:
ENGINE REPLACEMENT INSTRUCTIONS
FOR DTC P1326 (PI2104Y/Z)
This bulletin provides information related to the Technical Service Bulletin previously published in (PI2104)
titled “Knock Sensor Detection System - ECU Logic Improvement” for 2014-2016MY Optima (TF HEV) vehicles
equipped with Theta 2.4L MPI engine, produced from December 11, 2013 through July 22, 2015. 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 4-6, 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 2023-18 for more details.
IMPORTANT
A Vehicle Diagnosis Number (VDN) must be created with or without DTC P1326, after scanning for
DTCs, prior to performing PI2104Y/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 18
ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2104Y/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
KSDS requirement waived
until 11/04/2023
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
PI210S
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: PI2104Y/Z Optima (TF HEV) July 2023
Page 3 of 18
SUBJECT:
ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2104Y/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 supplied 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: PI2104Y/Z Optima (TF HEV) July 2023
Page 4 of 18
SUBJECT:
ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2104Y/Z)
Flowcharts A/B/C:
A. DTC P1326 STORED
Create PI2104Y 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
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: PI2104Y/Z Optima (TF HEV) July 2023
Page 5 of 18
SUBJECT:
ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2104Y/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 PI2104
(As Applicable)
PI210S
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: PI2104Y/Z Optima (TF HEV) July 2023
Page 6 of 18
SUBJECT:
ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2104Y/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
PI2104 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
KSDS 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 for updated
software
Yes
Refer to PI2104
(As Applicable)
PI210S
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: PI2104Y/Z Optima (TF HEV) July 2023
Page 7 of 18
SUBJECT:
ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2104Y/Z)
Video Instructions for Seized Engine Inspection: (Flowchart C)
Prepare the vehicle prior to the video by removing the spark plugs and drive belt as well as setting the
torque wrench to 94 lb.ft.
1.
Start video showing the vehicle being worked
on and move the camera in towards the dash
VIN tag.
Note: Continue filming video until step 7.
2.
Show the removed spark plugs.
3.
Show the empty spark plug holes from the
engine.
5.
Show the removed drive belt and attached
torque wrench to crank bolt.
6.
Show the engine being cranked and torque
specification exceeding 94 lb.ft. torque.
7.
Submit video with Techline PWA case.
Printed TSB copy is for reference only; information may be updated at any time. Always refer to KGIS for the latest information.
TSB: PI2104Y/Z Optima (TF HEV) July 2023
Page 8 of 18
ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI2104Y/Z)
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