Recall 14V086 covers 2,019 2014-2015 Kenworth T660, T800, W900, T440, 382, 365, 384, and 320 trucks for frozen intake-pressure-sensor interference. Free ECM calibration.
Kenworth is recalling 2,019 2014-2015 T440, T660, T800, W900, 320, 365, 382, and 384 tractor trailers with Cummins Westport ISL G and ISX12 G engines because frozen condensation can disrupt the intake manifold pressure sensor. That sensor problem can raise exhaust temperatures or send flames from the exhaust pipe, which increases the risk of a vehicle fire or burn injury; the dealer repair will be free once available.
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What's wrong?
The intake manifold on the 2014-2015 Kenworth T660, T800, W900, T440, 382, 365, 384, and 320 tractor trailers routes incoming air toward the engine. The intake manifold pressure sensor reads the air pressure in that passage so the engine computer has the pressure signal it needs for proper operation.
On affected trucks with Cummins Westport Model ISL G and ISX12 G engines, condensation can collect inside the intake manifold during cold weather. When that moisture freezes, ice can interfere with the intake manifold pressure sensor. A blocked or distorted pressure reading leaves the engine computer working from bad intake-pressure information instead of the real air condition inside the manifold.
There is no warning sign before failure. Because the filing does not list an advance symptom, owners should treat cold-weather engine problems on these trucks as a dealer service issue and confirm whether the VIN is included.
Who's affected?
Spans 8 truck models across the 2014-2015 model years, all tied to the engine.
| 2014 Kenworth T660 | Engine |
|---|---|
| 2014 Kenworth T800 | Engine |
| 2014 Kenworth W900 | Engine |
| 2014 Kenworth T440 | Engine |
| 2015 Kenworth T440 | Engine |
| 2015 Kenworth T660 | Engine |
| 2015 Kenworth T800 | Engine |
| 2015 Kenworth W900 | Engine |
| 2015 Peterbilt 382 | Engine |
| 2014 Peterbilt 365 | Engine |
| 2015 Peterbilt 365 | Engine |
| 2014 Peterbilt 384 | Engine |
| 2014 Peterbilt 320 | Engine |
| 2014 Peterbilt 382 | Engine |
| 2015 Peterbilt 384 | Engine |
| 2015 Peterbilt 320 | Engine |
| Units affected | 2,019 |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Improper sensor operation can raise exhaust temperatures or send flames from the exhaust pipe, increasing the risk of a vehicle fire or burn injury for someone standing near the pipe. Keep people clear of the exhaust area and ask the dealer how to handle the vehicle until the repair opens. Repair will be free at any franchised Kenworth dealer once available.
What should I do?
- Check your VIN to confirm your 2014-2015 Kenworth T660, T800, W900, T440, 382, 365, 384, or 320 is included in this recall.
- Watch for the owner notice if you have not received one, then contact a franchised Kenworth dealer or authorized Cummins service facility.
- Reference recall number 14V086 when you call so the service desk can find the ECM calibration repair.
- Schedule the free ECM calibration that corrects intake-manifold-pressure-sensor operation during cold weather.
- Keep people clear of the exhaust outlet until the repair is complete, because the recall cites elevated exhaust temperatures or flames from the exhaust pipe.
What happens at the repair
Authorized Cummins service facilities will upload a new ECM calibration for the affected engine control module. The update is intended to keep intake manifold condensation from freezing in cold weather and disrupting the intake manifold pressure sensor. The filing names Kenworth recall number 14KWG for this repair path. Because the current remedy status is not listed, confirm the repair route with a Kenworth dealer before taking the truck in. The dealer repair will be free once available, and parts and labor are covered under recall 14V086.
Timeline
| February 18, 2014 | NHTSA published the recall |
|---|---|
| April 12, 2014 | Owner notification mailed |
Frequently asked questions
What is recall 14V086?
Recall 14V086 covers 2,019 2014-2015 Kenworth T660, T800, W900, T440, 382, 365, 384, and 320 tractor trailers with certain Cummins Westport ISL G and ISX12 G engines. Condensation can freeze in the intake manifold and interfere with the intake manifold pressure sensor.
What should I do if my 2014-2015 Kenworth T660, T800, W900, T440, 382, 365, 384, or 320 is on this recall?
Check your VIN to confirm your specific truck is included in recall 14V086. If it is, contact a franchised Kenworth dealer or authorized Cummins service facility to schedule the ECM calibration update. Reference recall number 14V086, plus 14KWG for Kenworth service, when you call.
Is the recall repair free?
Yes. Federal recall law requires the recall repair at no cost, and authorized Cummins service facilities will upload the new ECM calibration free of charge. PACCAR's recall notice says the repair began on April 12, 2014.
What is the safety risk?
The intake manifold pressure sensor can operate improperly if frozen condensation interferes with it. That sensor problem can cause elevated exhaust temperatures or flames from the exhaust pipe, increasing the risk of a vehicle fire or burn injury to a person near the exhaust pipe.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/14V086000 |
|---|---|
| Kenworth customer service | 1-425-468-7400 |
| NHTSA recall # | 14V086 |
| NHTSA recall # (full) | 14V086000 |
Source documents
-
Download Owner Notification Letter (PDF) - Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →