Recall 20V466 affects 5,374 2017-2021 Freightliner Business Class M2 trucks for engine-harness chafing. Repair is free at any franchised Freightliner dealer.
Freightliner is recalling 5,374 2017-2021 Business Class M2 trucks because the engine harness can rub against parts near the air compressor and frame rail, damaging wires. Damaged wiring can short circuit and stall the engine; Freightliner dealers will complete the repair free of charge.
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What's wrong?
The engine harness on the 2017-2021 Freightliner Business Class M2 is the truck's main bundle of engine wiring. It carries power and signals between the engine, sensors, and control modules, so the DD5 engine can run and respond correctly. The harness has to stay routed away from hard parts that move, vibrate, or rub during normal use.
On affected Business Class M2 trucks, the harness can contact the air compressor area or the frame rail. Vibration then lets those surfaces chafe the wiring until the insulation wears through. Once the wires are damaged, they can short circuit and cause the engine to stall.
There is no warning sign before failure. The first clear sign is the truck shutting down after the wiring has already been damaged.
Who's affected?
Spans the 2017-2021 model years, with both engine and wiring components listed for each model year.
| 2020 Freightliner Business Class M2 | Engine |
|---|---|
| 2020 Freightliner Business Class M2 | wiring |
| 2021 Freightliner Business Class M2 | Engine |
| 2021 Freightliner Business Class M2 | wiring |
| 2017 Freightliner Business Class M2 | Engine |
| 2017 Freightliner Business Class M2 | wiring |
| 2018 Freightliner Business Class M2 | Engine |
| 2018 Freightliner Business Class M2 | wiring |
| 2019 Freightliner Business Class M2 | Engine |
| 2019 Freightliner Business Class M2 | wiring |
| Units affected | 5,374 |
| Field incidents | NHTSA has logged 1 field incident to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific truck.
What's the safety risk?
An engine stall creates crash risk by cutting power while the truck is in use. There is no warning sign before failure, so treat any unexpected stumble, shutdown, or loss of power as a reason to pull over safely and arrange service. Repair is free at any franchised Freightliner dealer.
What should I do?
- Check your VIN to confirm your 2017-2021 Freightliner Business Class M2 is included in this recall.
- Contact a franchised Freightliner dealer to schedule the free engine-harness inspection and repair.
- Ask the dealer to inspect the engine harness for chafing near the air compressor and frame rail, and to replace any damaged harness before the truck returns to service.
- Bring the recall notice if Freightliner mailed one. If not, reference recall number 20V466 when you call.
- Call Freightliner customer service at 1-800-547-0712 with questions about the repair or dealer scheduling.
What happens at the repair
At the dealer, a Freightliner technician checks the engine harness for proper clearance around the air compressor and frame rail, then inspects the harness for chafing or wire damage. If the harness is damaged, the dealer installs a replacement harness. These inspection and repair steps are free under the recall, including parts and labor. The service desk can also confirm whether recall 20V466 applies to the specific truck before work begins.
Timeline
| August 7, 2020 | NHTSA published the recall |
|---|---|
| October 5, 2020 | Dealer notification began |
| October 5, 2020 | Dealer notification ended |
| October 5, 2020 | Owner notification mailed |
| October 5, 2020 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 20V466?
Recall 20V466 covers 5,374 2017-2021 Freightliner Business Class M2 trucks with an engine harness that can contact and chafe near the air compressor or frame rail. Damaged wires can short circuit and stall the engine. Freightliner dealers will inspect the harness, replace damaged harnesses, and complete the repair for free.
What should I do if my 2017-2021 Freightliner Business Class M2 is on this recall?
Check your VIN to confirm your specific truck is included in recall 20V466. If it is, contact a franchised Freightliner dealer to schedule the engine-harness inspection. Reference recall number 20V466 and Freightliner recall number FL-858 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Freightliner dealers will perform the inspection and any needed engine-harness replacement free of charge. Parts and labor are covered for included vehicles.
What is the safety risk?
The safety risk is an engine stall. If the engine harness is damaged and the wires short circuit, the truck can stall while being driven, increasing the risk of a crash. A Freightliner dealer will check harness clearance and damage, then replace the harness if needed.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/20V466000 |
|---|---|
| Freightliner customer service | 1-800-547-0712 |
| NHTSA recall # | 20V466 |
| NHTSA recall # (full) | 20V466000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Misc. Document (PDF)
- Download Quarterly Report (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 24, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →