TIB-45-046

CSC-10052072-5056
Date
Customer Name
Customer Address
Subject: TIB 45-046, PX-6 TBAP Sensor Jumper Harness Campaign
Dear Kenworth Customer,
Kenworth has identified that some medium duty vehicles built between 05/15/2009 –
06/26/2012 and equipped with the PACCAR PX-6 engine have a potential for the
Temperature and Barometric Pressure (TBAP) sensor wires to rub against other
components and create a short circuit. The TBAP sensor contributes to proper fuel
delivery and engine timing and a short in the TBAP sensor harness may result in
improper engine performance and even catastrophic engine damage.
Vehicles listed by VIN on this letter are included in the suspect population and
Kenworth would like the opportunity to inspect the TBAP sensor harness and make
corrections if necessary. Please contact a Kenworth dealership to schedule an
appointment for this work. You can find the nearest Kenworth dealer at Dealer
Locator on the website www.Kenworth.com.
When contacting your selected Kenworth dealer, refer to campaign TIB 45-046 and
the VIN listed on this letter. The inspection and possible repair will take less than
half an hour and there will be no charge to you.
We apologize for this inconvenience but ask for your cooperation to ensure
continued satisfaction with Kenworth products.
Thank you,
Mike Kalkoske
Director, Quality Services
Kenworth Truck Company
VIN:

TIB 45-046; PX-6 TBAP Sensor Jumper Harness Campaign
Page 1 of 2
SB-10052072-9145
Technical Information Bulletin
45-046
Section
Engine - 45
Subject
PX-6 TBAP Sensor Jumper Harness Campaign
Release Date
1/3/2013
Condition
The Temperature and Barometric Pressure (TBAP) sensor harness may have wires exposed to
rubbing/chafing on chassis listed.
Chassis Affected
1,226 K270s, K370s, T170s, T270s and T370s, built between 01/01/12 – 06/29/12 and equipped with a
PACCAR PX-6 engine. See the attached chassis list and customer letter.
Action
Inspect and, if necessary, service all chassis affected that enter your dealership, even if the customer has no
issue with the chassis. Use the procedure below. Review DWC or SIR online systems to verify that campaign
“45-46” is still open or already completed prior to performing this repair.
Warranty
TIB 45-046; PX-6 TBAP Sensor Jumper Harness Campaign
Page 2 of 2
There is no time or mileage limit to this campaign. Kenworth will pay warranty claims for either inspection or
repair as appropriate (see Procedure):
Quick Claim 45-46a; inspection only, includes 0.3 hours labor
Quick Claim 45-46b; replace harness, includes 0.4 hours labor
Quick Claim 45-46c; harness repair, includes 0.4 hours labor
CLAIM CODING:
Failure Location: 045-021-007
Responsibility Code: 02
Work Accomplished: 46
SRT Code: 045-XXX
Failure Type: 700
Claim Type: N
Parts
Parts, if required, are available from PACCAR Parts (see Procedure).
Quantity
1
1
Part Number
P92-4225-1000
Shop Supplies
Description
TBAP Harness
Tie Wraps
Background
Failures from damaged TBAP sensor wires will result in fault codes 778 and/or 2322 with 187 (active or
inactive). Left uncorrected, an electrical short may develop which can lead to incorrect fuel quantity and
timing and possible catastrophic engine failure.
Procedure
TIB 45-046 PX-6 Harness Procedure.pdf
Attachments
TIB 45-046 Dealer-Chassis-Customer List.xls
TIB 45-046 Customer Letter.pdf
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