Recall 14V722 affects 1,380 2015 Kenworth T660, T800, W900, C500, and T400 trucks for undersized trailer stop-lamp wiring. Free repair at any franchised Kenworth dealer.
Kenworth is recalling 1,380 2015 T660, T800, W900, T400, and C500 heavy trucks because the trailer stop lamp circuit in the instrument panel harness was built with undersized wire. That smaller wire can overheat and raise the risk of a vehicle fire; Kenworth dealers will complete the recall repair free of charge.
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What's wrong?
The trailer stop lamp circuit on the 2015 Kenworth T660, T800, W900, C500, and T400 carries electrical power through the instrument panel harness to the trailer brake lights. When the driver presses the brake pedal, that circuit tells the trailer stop lamps to light so traffic behind the truck can see braking.
On affected trucks, the wire used for that circuit was smaller than the specification required. A smaller wire heats up faster under the same electrical load. Testing showed that under a high current load, the wire temperature rose enough to melt the insulation around it. The root cause was a specification error in the harness build.
There is no warning sign before failure. The driver is not given a clear dashboard alert or visible symptom before the trailer stop lamp circuit overheats or the wire insulation begins to melt.
Who's affected?
Covers five Kenworth truck models in one model year, all tied to the same electrical-system component.
| 2015 Kenworth T660 | electrical system |
|---|---|
| 2015 Kenworth T800 | electrical system |
| 2015 Kenworth W900 | electrical system |
| 2015 Kenworth C500 | electrical system |
| 2015 Kenworth T400 | electrical system |
| Units affected | 1,380 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching 2015 Kenworth model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
The undersized wire can overheat and increase the risk of a vehicle fire. NHTSA campaign 14V722 does not list a warning sign before overheating, so schedule the recall repair soon instead of waiting for a symptom. Repair is free at any franchised Kenworth dealer.
What should I do?
- Check your VIN to confirm your 2015 Kenworth T660, T800, W900, C500, or T400 is included in this recall.
- Contact a franchised Kenworth dealer to schedule the free trailer stop-lamp wire replacement.
- Tell the dealer the repair replaces the undersized instrument-panel harness wire that can overheat in the trailer stop-lamp circuit.
- Bring the recall notice if Kenworth mailed one. If not, reference recall number 14V722 when you call.
- Ask Kenworth customer service at 1-425-828-5000 about scheduling questions if the dealer needs help finding the recall.
What happens at the repair
At the dealer, a Kenworth technician replaces the defective trailer stop lamp circuit wire in the instrument panel harness with a properly sized wire. The recall repair is free, including parts and labor. If you've already paid out of pocket for a related trailer stop lamp wiring repair, keep the invoice and ask Kenworth service or PACCAR customer service how to submit documentation under PACCAR's reimbursement plan.
| Reimbursement | Reimbursement available |
|---|
Timeline
| November 10, 2014 | NHTSA published the recall |
|---|---|
| December 19, 2014 | Owner notification mailed |
Frequently asked questions
What is recall 14V722?
Recall 14V722 covers 1,380 2015 Kenworth T660, T800, W900, C500, and T400 heavy trucks with an undersized trailer stop-lamp circuit wire in the instrument panel harness. The wire can overheat and increase fire risk. Kenworth dealers replace it for free.
What should I do if my 2015 Kenworth T660, T800, W900, C500, or T400 is on this recall?
Check your VIN to confirm your specific truck is included in recall 14V722. If it is, contact a franchised Kenworth dealer to schedule the instrument panel harness wire replacement. Reference recall number 14V722 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the recall repair at no cost to the owner. Kenworth dealers replace the undersized trailer stop-lamp circuit wire with a properly sized wire free of charge, including parts and labor.
What is the safety risk?
The safety risk is fire. The undersized wire for the trailer stop-lamp circuit can overheat inside the instrument panel harness, increasing the risk of a vehicle fire. Confirm the VIN, then schedule the free wire replacement with a Kenworth dealer.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/14V722000 |
|---|---|
| Kenworth customer service | 1-425-828-5000 |
| NHTSA recall # | 14V722 |
| NHTSA recall # (full) | 14V722000 |
Source documents
-
Download Owner Notification Letter (PDF) - Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 1, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →