GROUP
Product Improvement

MODEL
See Model List
on Page 1

NUMBER
PI1802W/X (Rev 6, 11/07/2019)

DATE
October 2018

PRODUCT IMPROVEMENT CAMPAIGN
ENGINE REPLACEMENT INSTRUCTIONS
FOR DTC P1326 (PI1802W/X)

SUBJECT:

 NOTICE
This bulletin has been revised to include additional information. New/revised
sections of this bulletin are indicated by a black bar in the margin area.
This bulletin provides information related to the Technical Service Bulletin previously published
in July 2018 (PI1802, Rev 6, 01/31/2019) titled “Knock Sensor Detection System - ECU Logic
Improvement”. Specifically, this bulletin provides instructions on which procedures to follow if,
after installation of the KSDS, any one of the subject vehicles below returns to the dealer with
Diagnostic Trouble Code (“DTC”), P1326.
Year

Model

Engine

Production Date

2014

Optima (TF)

2.4L GDI

8/29/13 – 4/25/14

2015-2018

Optima (TF/QF/JF/JFa)

2.4L & 2.0L T-GDI

4/16/14 – 7/11/18

2014-2018

Sportage (SL/QL)

2.4L & 2.0L T-GDI

9/30/13 – 4/5/18

2015-2018

Sorento (XMa/UMa)

2.4L & 2.0L T-GDI

1/3/14 – 3/7/18

If DTC P1326 is present, first check for any wiring signal interference following the procedure
set forth below before determining whether an engine replacement is necessary. Based on the
results of the Wiring Signal Interference Check, dealers are to perform either the Knock Sensor
Wiring Repair or, if the engine noise inspection result confirms it, the Engine Long-Block
Replacement, according to the procedures in this TSB.
If the vehicle’s engine is already seized or severely knocking, dealers are to perform the
Engine Long-Block Replacement and the Wiring Signal Interference Check according to the
procedures in this TSB.
A Vehicle Diagnosis Number (VDN) must be created with DTC P1326, prior to performing
PI1802W/X. If a VDN is not created, Warranty claim submission issues may occur.
Before conducting the procedure, verify the vehicle is included in the list of affected VINs.

 NOTICE
To ensure complete customer satisfaction, always remember to refer to WebDCS
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.
File Under:
X General Manager

X Service Advisors
X Technicians



Circulate To:

X Service Manager
X Parts Manager


X Body Shop Manager  Fleet Repair


Page 2 of 45
SUBJECT:

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X)

Flow Chart:
DTC P1326
present

Engine seized/
severely knocking

Perform Engine
Replacement
Procedure (page 17)
(with Techline
Authorization)

Perform Wiring Signal
Interference Check
Procedure (page 3)

Pass

Fail

Clear DTC P1326 with
Engine ON (if stored)

Install KS
extension harness
(page 12)

Perform Engine Noise
Inspection
(page 5)

Pass

Install KS
extension harness
(page 12)

Perform ECU update for
KSDS Software Installation
according to PI1802

Perform Wiring Signal
Interference Check
Procedure (page 3)

Pass

Fail

No further
action required

Install KS
extension
harness
(page 5)

Fail

Perform Engine
Replacement Procedure
(page 17)
NO TECHLINE
AUTHORIZATION
REQUIRED!

Clear DTC P1326
with Engine ON

Confirm that the Rom ID is up-to-date.
If not, reflash the ECU to the
latest ROM ID available.
Refer to PI1802 – Knock Sensor Detection
System ECU Logic Improvement

Note: If any concerns arise after completing the flow chart, open a Techline case online.

 IMPORTANT
ALL claims for engine or harness replacement without the required diagnostic
inspection/results or authorization are subject to claim chargeback/denial without
exception.
TSB: PI1802W/X (Rev 6) Multiple Models October 2018

Page 3 of 45
SUBJECT:

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X)

Wiring Signal Interference Check Procedure:
1.

Using the KDS (connected to the
internet), perform a Fault Code Search
and confirm DTC P1326 is present.
 If P1326 is present, proceed to the
next step to perform the wiring signal
interference check.
 If the engine is seized or severely
knocking, proceed to the engine
replacement procedure on page 17
(with Techline authorization per Flow
Chart).

2.

Start/warm up the engine and ensure
ENGINE OIL is at operating temperature
(176°F).

3.

From the KDS Home Screen, select S/W
Management.

4.

Select Engine Control → Wiring Signal
Interference Check.

TSB: PI1802W/X (Rev 6) Multiple Models October 2018

Page 4 of 45
SUBJECT:

5.

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X)

Ensure the engine is on and at idle and
ENGINE OIL temperature is at 176°F
degrees or higher. Select OK to proceed.

5b. Select OK to proceed.
NOTE: This test should only be
performed if Knock Sensor Detection
System - ECU Logic Improvement
(PI1802) has previously been completed.

5c. If the conditions are not met, a pop-up as
shown will be displayed.

6.

Enter vehicle mileage and RO number
(VIN is automatically populated).

TSB: PI1802W/X (Rev 6) Multiple Models October 2018

Page 5 of 45
SUBJECT:

7.

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X)

Wiring Signal Interference Check test will
begin and take about three (3) minutes to
complete. NOTE: Do not push on the
accelerator pedal.



If the result is “OK”, clear DTC P1326
and then proceed to the Engine Noise
Inspection procedure on page 5.

 NOTICE
DTC P1326 must be cleared in
order to perform the Engine
Noise Inspection Procedure.


If the result is “NOT OK”, turn the
engine off and proceed to step 2 of
the Knock Sensor (KS) Extension
Harness Installation procedure on
page 12.

Engine Noise Inspection Procedure:
1. Prior to inspection, ensure the KDS is
fully charged and is connected to the
internet every day to ensure the latest
update is received and installed.




Engine oil level should be at the “FULL”
mark. Top off with 5W-30 if required.
Test requires the engine to be in
satisfactory running condition and able
to idle normally.
Engine coolant temperature should be
above minimum test temperature:
185°F (85°C).

If the engine’s running condition is poor due to issues unrelated to a connecting rod knocking
noise (faulty sensors, intake/exhaust manifold leak, catalytic converter, etc.), diagnose and
repair prior to performing this inspection procedure. If the engine cannot be tested or has
other major concerns, see Warranty Claim Authorization information on page 40.
TSB: PI1802W/X (Rev 6) Multiple Models October 2018

Page 6 of 45
SUBJECT:

2.

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X)

With the engine off, remove the dipstick
(A).

 NOTICE
A

Engine cover removed in
images for demonstration-only
purposes.

3.

Insert the engine noise tester SST
adapter (B) into the dipstick tube then
start and idle the engine.

D

E

 NOTICE
To avoid false readings, ensure
the adapter (B) is properly
inserted into the dipstick tube
and that the tube is not in
contact
with
the
intake
manifold.

C

B

If the dipstick tube is not
centered and is close to or
touching the manifold, carefully
adjust (bend) and center the
dipstick tube with a pry bar.

B
Not Centered

Centered

Click here for a video tutorial of the
Inspection Procedure.
4.

Connect the 3.5 mm male end of the
engine noise tester SST (C) to the 3.5
mm female end of the extension cable
(D).

TSB: PI1802W/X (Rev 6) Multiple Models October 2018

C

D

Page 7 of 45
SUBJECT:

5.

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X)

Attach the SST clip of the extension
cable (D) to the hood latch.

D

 NOTICE
Make sure to route the
extension cable away from
moving parts (pulleys, fan, and
belts and be careful not to get it
pinched between door and body
or window, etc.).

6.

Connect the 3.5 mm male end (E) of the
extension cable to the headphone port
located at the upper left corner (KDS
version 1.0) or at the bottom of the tablet
(KDS version 2.0).

KDS Version 1
KDS
Version 2

E
7.

Connect the VCI-II to the OBD-II
connector and launch the KDS
application from the KDS tablet home
page.

8.

Confirm communication with VCI (F) and
then configure the vehicle (G) using the
AUTO VIN (H) feature.

G
F

H
TSB: PI1802W/X (Rev 6) Multiple Models October 2018

Page 8 of 45
SUBJECT:

9.

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X)

Swipe up the “More” tab from the lower
screen of the KDS and select “Special
Inspection”.

 NOTICE
If the vehicle model/model year
does not qualify for this
campaign, a message will pop
up; if so, verify that the vehicle
is included in the list of affected
VINs.
10. Complete the vehicle information form on
the screen:




Mileage
RO number
Select “Verify” to verify the VIN

Note: VIN must be verified with the
“Verify” function in order to proceed
to the next step.
Select “Next” to continue.

11. Confirm that all of the pre-inspection
items listed on the screen are true:










Engine Oil Level – Normal
Coolant Level – Normal
Engine Cover – Installed
Driver Window – Opened
A/C & Blower Motor – OFF
Audio & All Accessories – OFF
Engine – Warm up (185°F or higher)
Insert “A” into dipstick tube
Connect “B” part at tablet headphone
port

Select “Next” after
mentioned above.

checking

items

TSB: PI1802W/X (Rev 6) Multiple Models October 2018

Page 9 of 45
SUBJECT:

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X)

12. The program will automatically check the
engine sensors’ data. Select the “Next”
button if all the conditions are satisfied.



Engine Coolant Temperature: 185°F
or higher
A/C Request to ECU: OFF

Note: If the test item result is “NOT
GOOD”, correct the condition then select
“Refresh Data”.

13. Follow the instructions on the screen
then select “Next”.

14. Prior to the initial measurement, the
program will automatically check if the
engine noise tester is installed and
operating correctly at engine idle and
perform an internal diagnosis.
Begin the second part of the engine
noise tester check by selecting “Start”.

 NOTICE
If the measured noise level is
too low or abnormally high, an
engine noise tester inspection
message will pop up. Check and
correct as necessary and start
again.

TSB: PI1802W/X (Rev 6) Multiple Models October 2018

Page 10 of 45
SUBJECT:

ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802W/X)

15. With the vehicle in Park (A/T) / Neutral
(M/T), increase and maintain the engine
speed at 2,000-3,000 RPM for thirty (30)
seconds.
The program will automatically proceed
to the next step when the engine noise
tester is ready.

 NOTICE
Once the RPM is in the specified
range, the time count (green
bars) will be initialized.

16. With the vehicle in Park (A/T) / Neutral