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NHTSA campaign 20V199000 · manufacturer recall 20pbc AND 20KWB

2008–2020 Kenworth and Peterbilt: service brakes, air recall

If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash.

minor 460,515 vehicles affected FMVSS 121 34% reported repaired

What was reported

Source: manufacturer filing, 49 CFR Part 573
Problem PACCAR Incorporated (PACCAR) is recalling certain 2008-2019 Peterbilt 330, 335, 337, 340, 348, 365, 367, 384, 386, 387, 388, 389, 567, 579 and 587 vehicles and 2008-2020 Kenworth T170, T270, T370, T660, T680, T800, T880, and W900 vehicles equipped with NAMUX Software. In the event that the Anti-lock Brake System (ABS) loses battery and/or ignition power to the controller, the dash warning light for the ABS may not illuminate to warn the driver of the loss of ABS. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems," and 136, "Electronic Stability Control System on Heavy Vehicles." Risk If the driver unknowingly operates the vehicle without the ABS functioning, there would be an increased risk of a crash. Fix PACCAR will notify owners, and dealers will update the NAMUX software within the cab control module, free of charge. PACCAR issued owners an interim notification on June 4, 2020. The recall began May 26, 2020. Owners may contact Kenworth customer service at 1-425-828-5888 or Peterbilt customer service at 1-940-591-4220. PACCAR's number for this recall is 20pbc AND 20KWB.

Reported to NHTSA Apr 6, 2020 by PACCAR Incorporated, owners notified May 26, 2020.

Which vehicles are covered

Source: NHTSA campaign 20V199000
Model yearOn WhichTrim
2008 Kenworth T170
2009 Kenworth T170
2010 Kenworth T170
2011 Kenworth T170
2012 Kenworth T170
2013 Kenworth T170
2014 Kenworth T170
2015 Kenworth T170
2016 Kenworth T170
2017 Kenworth T170
2018 Kenworth T170
2019 Kenworth T170
2020 Kenworth T170
2008 Kenworth T270
2009 Kenworth T270
2010 Kenworth T270
2011 Kenworth T270
2012 Kenworth T270
2013 Kenworth T270
2014 Kenworth T270
2015 Kenworth T270
2016 Kenworth T270
2017 Kenworth T270
2018 Kenworth T270
2019 Kenworth T270
2020 Kenworth T270
2008 Kenworth T370
2009 Kenworth T370
2010 Kenworth T370
2011 Kenworth T370
2012 Kenworth T370
2013 Kenworth T370
2014 Kenworth T370
2015 Kenworth T370
2016 Kenworth T370
2017 Kenworth T370
2018 Kenworth T370
2019 Kenworth T370
2020 Kenworth T370
2008 Kenworth T660
2009 Kenworth T660
2010 Kenworth T660
2011 Kenworth T660
2012 Kenworth T660
2013 Kenworth T660
2014 Kenworth T660
2015 Kenworth T660
2016 Kenworth T660
2017 Kenworth T660
2018 Kenworth T660
2019 Kenworth T660
2011 Kenworth T680
2012 Kenworth T680
2013 Kenworth T680
2014 Kenworth T680
2015 Kenworth T680
2016 Kenworth T680
2017 Kenworth T680
2018 Kenworth T680
2019 Kenworth T680
2020 Kenworth T680
2008 Kenworth T800
2009 Kenworth T800
2010 Kenworth T800
2011 Kenworth T800
2012 Kenworth T800
2013 Kenworth T800
2014 Kenworth T800
2015 Kenworth T800
2016 Kenworth T800
2017 Kenworth T800
2018 Kenworth T800
2019 Kenworth T800
2020 Kenworth T800
2011 Kenworth T880
2012 Kenworth T880
2013 Kenworth T880
2014 Kenworth T880
2015 Kenworth T880
2016 Kenworth T880
2017 Kenworth T880
2018 Kenworth T880
2019 Kenworth T880
2020 Kenworth T880
2008 Kenworth W900
2009 Kenworth W900
2010 Kenworth W900
2011 Kenworth W900
2012 Kenworth W900
2013 Kenworth W900
2014 Kenworth W900
2015 Kenworth W900
2016 Kenworth W900
2017 Kenworth W900
2018 Kenworth W900
2019 Kenworth W900
2020 Kenworth W900
2008 Peterbilt 330
2009 Peterbilt 330
2010 Peterbilt 330
2011 Peterbilt 330
2012 Peterbilt 330
2013 Peterbilt 330
2014 Peterbilt 330
2015 Peterbilt 330
2016 Peterbilt 330
2017 Peterbilt 330
2018 Peterbilt 330
2019 Peterbilt 330
2008 Peterbilt 335
2009 Peterbilt 335
2010 Peterbilt 335
2011 Peterbilt 335
2008 Peterbilt 337
2009 Peterbilt 337
2010 Peterbilt 337
2011 Peterbilt 337
2012 Peterbilt 337
2013 Peterbilt 337
2014 Peterbilt 337
2015 Peterbilt 337
2016 Peterbilt 337
2017 Peterbilt 337
2018 Peterbilt 337
2019 Peterbilt 337
2008 Peterbilt 340
2009 Peterbilt 340
2010 Peterbilt 340
2011 Peterbilt 340
2008 Peterbilt 348
2009 Peterbilt 348
2010 Peterbilt 348
2011 Peterbilt 348
2012 Peterbilt 348
2013 Peterbilt 348
2014 Peterbilt 348
2015 Peterbilt 348
2016 Peterbilt 348
2017 Peterbilt 348
2018 Peterbilt 348
2019 Peterbilt 348
2008 Peterbilt 365
2009 Peterbilt 365
2010 Peterbilt 365
2011 Peterbilt 365
2012 Peterbilt 365
2013 Peterbilt 365
2014 Peterbilt 365
2015 Peterbilt 365
2016 Peterbilt 365
2017 Peterbilt 365
2018 Peterbilt 365
2019 Peterbilt 365
2008 Peterbilt 367
2009 Peterbilt 367
2010 Peterbilt 367
2011 Peterbilt 367
2012 Peterbilt 367
2013 Peterbilt 367
2014 Peterbilt 367
2015 Peterbilt 367
2016 Peterbilt 367
2017 Peterbilt 367
2018 Peterbilt 367
2019 Peterbilt 367
2008 Peterbilt 384
2009 Peterbilt 384
2010 Peterbilt 384
2011 Peterbilt 384
2012 Peterbilt 384
2013 Peterbilt 384
2014 Peterbilt 384
2015 Peterbilt 384
2016 Peterbilt 384
2017 Peterbilt 384
2018 Peterbilt 384
2019 Peterbilt 384
2008 Peterbilt 386
2009 Peterbilt 386
2010 Peterbilt 386
2011 Peterbilt 386
2012 Peterbilt 386
2013 Peterbilt 386
2014 Peterbilt 386
2015 Peterbilt 386
2016 Peterbilt 386
2017 Peterbilt 386
2018 Peterbilt 386
2019 Peterbilt 386
2008 Peterbilt 387
2009 Peterbilt 387
2010 Peterbilt 387
2011 Peterbilt 387
2012 Peterbilt 387
2013 Peterbilt 387
2014 Peterbilt 387
2015 Peterbilt 387
2016 Peterbilt 387
2008 Peterbilt 388
2009 Peterbilt 388
2010 Peterbilt 388
2011 Peterbilt 388
2012 Peterbilt 388
2013 Peterbilt 388
2014 Peterbilt 388
2015 Peterbilt 388
2016 Peterbilt 388
2017 Peterbilt 388
2018 Peterbilt 388
2019 Peterbilt 388
2008 Peterbilt 389
2009 Peterbilt 389
2010 Peterbilt 389
2011 Peterbilt 389
2012 Peterbilt 389
2013 Peterbilt 389
2014 Peterbilt 389
2015 Peterbilt 389
2016 Peterbilt 389
2017 Peterbilt 389
2018 Peterbilt 389
2019 Peterbilt 389
2008 Peterbilt 567
2009 Peterbilt 567
2010 Peterbilt 567
2011 Peterbilt 567
2012 Peterbilt 567
2013 Peterbilt 567
2014 Peterbilt 567
2015 Peterbilt 567
2016 Peterbilt 567
2017 Peterbilt 567
2018 Peterbilt 567
2019 Peterbilt 567
2008 Peterbilt 579
2009 Peterbilt 579
2010 Peterbilt 579
2011 Peterbilt 579
2012 Peterbilt 579
2013 Peterbilt 579
2014 Peterbilt 579
2015 Peterbilt 579
2016 Peterbilt 579
2017 Peterbilt 579
2018 Peterbilt 579
2019 Peterbilt 579
2008 Peterbilt 587
2009 Peterbilt 587
2010 Peterbilt 587
2011 Peterbilt 587
2012 Peterbilt 587
2013 Peterbilt 587
2014 Peterbilt 587
2015 Peterbilt 587
2016 Peterbilt 587
2017 Peterbilt 587
2018 Peterbilt 587
2019 Peterbilt 587

None of the vehicles this campaign names has a page on WhichTrim: the catalogue covers the cars, trucks and SUVs the EPA certifies from 2016 on, and these vehicles fall outside it — older model years, or motorhomes, trailers, buses, motorcycles and chassis cabs the EPA does not rate. The campaign record above is complete as filed, and whether one specific vehicle is included is settled by its VIN. Other campaigns on vehicles without a page here →

How much of it has been fixed

Source: manufacturer quarterly report, 49 CFR 573.7
Reported repaired 34%

of the campaign

The final figure: the six quarters of reporting that 49 cfr 573.7 requires have closed.

This is the manufacturer's own cumulative count of vehicles it has inspected and repaired, divided by the vehicles the campaign covers. It files that count with NHTSA every quarter for six consecutive quarters, starting from the quarter in which owners were told a remedy was ready, and then the obligation ends — so a figure on an older campaign is where the count stopped, not where it stands today.

It rarely reaches 100%, and not because the work was not done. The same report asks manufacturers to count vehicles they could not reach at all — exported, stolen, scrapped, or simply never located — and those stay in the denominator. A low number means a lot of these vehicles are still out there unrepaired; it does not tell you which ones.

The federal paperwork

Source: nhtsa.gov

Filed documents

Check one specific vehicle

A recall applies to a build range, so year, make and model cannot settle it. NHTSA checks a VIN against the manufacturer's own list and tells you whether the repair is still outstanding on that vehicle.

NHTSA VIN recall lookup →

Campaign 20V199000 · the manufacturer calls it 20pbc AND 20KWB

Own one, or run a fleet? Recall Watch checks each VIN against every new NHTSA campaign and emails you when one lands, this one's expansions included. Or take a free one-line alert by model year.

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Common questions

Source: NHTSA, 49 CFR Part 573

Is 20pbc AND 20KWB the same recall as 20V199000?

Yes. 20pbc AND 20KWB is the number PACCAR Incorporated uses for this campaign in its own paperwork and in the letter it sends owners. 20V199000 is the number NHTSA files it under. One recall, two references — dealers and service departments generally quote the manufacturer's.

Does this recall repair cost anything?

No. Federal law requires the manufacturer to remedy a safety defect or a compliance failure at no charge, for vehicles up to 15 years old measured from the date of first sale. A dealer that asks you to pay for a recall repair is in the wrong.

How do I know whether my vehicle is included?

By VIN, not by model year. The manufacturer files a build range with NHTSA and only vehicles inside it are covered, so two identical-looking cars from the same year can differ. NHTSA's own lookup checks a VIN against the manufacturer's list.

What if the repair is not available yet?

It happens, and often. Manufacturers must notify owners when a defect is found even if the parts or the software are not ready, then notify them a second time once the remedy exists. The remedy filed for this campaign is described above.

What did the manufacturer say was wrong?

The problem, risk and fix quoted on this page are the manufacturer's own words as filed with NHTSA under 49 CFR Part 573. WhichTrim does not paraphrase them.

Who started this recall?

NHTSA's record credits the manufacturer. A recall can begin with the manufacturer's own testing, with a defect investigation, or with a compliance test against a Federal Motor Vehicle Safety Standard.