The engine aftertreatment def fluid sensor in the def tank fails - setting a stop engine error code that shuts the truck down, resulting in an inoperatable vehicle on the road. Only way to move the truck is with a wrecker. Danger to driver and surrounding vehicles. Part has a known defect and is in allotment mode through dealers.
The worst 2020 Peterbilt 365 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine1
Recalls 4
Steering: critical fasteners
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2018-2020 Kenworth T270, T370, T440, T470, T660, T680, T880, T800, W900, W990; and 2018-2020 Peterbilt 330, 337, 348, 365, 367, 389, 520, 567, and 579 vehicles. The Dana D-Series axle steer arm fasteners that attach the steering arm to the steering knuckle may fail.
- Risk
- Fastener failure can result in a loss of steering control, increasing the risk of a crash or injury.
- Remedy
- Dealers will replace and torque the steer arm fasteners, at no charge. Owner notification letters were mailed November 8, 2022. Owners may contact Kenworth customer service at 1‑425‑828‑5888 and Peterbilt customer service at 1‑940‑591‑4220. PACCAR's numbers for this recall are 22 PBB and 22 KWB.
Recall number 22V277000 · Recall details
Fuel system, diesel: fuel injection system: fuel rail
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2018-2021 Peterbilt 337, 348, 365, 367, 520, 567, Kenworth T270, T370, T440, T470, T800 and T880 vehicles. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.
- Risk
- A fuel leak in the presence of an ignition source increases the risk of a fire.
- Remedy
- Dealers will inspect the rail threads and fuel lines, and replace the rail as necessary, free of charge. Owners may contact PACCAR customer service at 1‑425‑828‑5888 (Kenworth) or 1‑940‑591‑4220 (Peterbilt). PACCAR's numbers for this recall are 21KWC and 21PBD.
Recall number 21V391000 · Recall details
Power train: axle assembly
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 348, 365, 367, 389, 520, 567 and Kenworth T800, T880, W900, W990 vehicles equipped with Watson and Chalin steerable lift axle suspension systems (model SL2065). The axles may have lower rear pivot bolts that are not long enough to sufficiently engage the locking feature of the corresponding nuts.
- Risk
- The short screws can cause the hardware to separate from the suspension system and become road hazards, increasing the risk of a crash and/or injury.
- Remedy
- PACCAR will notify owners, and dealers will inspect suspect chassis and replace the pivot bolts, as necessary, free of charge. The recall began September 29, 2020. Owners may contact Kenworth customer service at 1‑425‑828‑5888 and Peterbilt customer service at 1‑940‑591‑4220. PACCAR's numbers for this recall is 20PBE and 20KWC.
Recall number 20V506000 · Recall details
Electrical system: 12v/24v/48v battery: cables
- What is wrong
- PACCAR Incorporated (PACCAR) is recalling certain 2015-2020 Peterbilt 365, 389, 567, and 579 vehicles equipped with a left-hand under hood jumper terminal (option code 2539410). The positive battery jumper terminal cable may be too long, allowing it to chafe against the left front suspension spring and result in an electrical short circuit.
- Risk
- An electrical short circuit can increase the risk of a fire.
- Remedy
- PACCAR will notify owners, and dealers will inspect the battery jumper terminal cables, and replace them as necessary, free of charge. The recall began April 30, 2020. Owners may contact PACCAR customer service at 1‑940‑591‑4220. PACCAR's number for this recall is 20PBA.
Recall number 20V130000 · Recall details
Technical service bulletins for the 2020 Peterbilt 365 50
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- 7/700 Service Agreement
- Certain chassis equipped with an engine model year 2019
- "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes
- The procedure has been updated to include additional steps for verifying the software level on the vehicle...
- 105 chassis have been removed from the chassis list and unflagged in PRWS due to expiration of applicable...
- This optional software update is now available for chassis equipped with EMY 2021B-2023 PACCAR MX-11 and...
- The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to...
- "The software is not yet available
- "An optional software update will be available on 07/06/2026 for chassis equipped with EMY...
- The attached procedures document has been updated with more detail and explanations
What 2020 Peterbilt 365 owners say
Most recent owner complaints, unedited.
Compare the 2020 Peterbilt 365
Other model years
2020
Questions about the 2020 Peterbilt 365
Is the 2020 Peterbilt 365 reliable?
Owners have filed 1 complaint about the 2020 Peterbilt 365, close to a typical 365 model year.
What is the most common problem with the 2020 Peterbilt 365?
Engine and cooling, with 1 complaint.
How many recalls does the 2020 Peterbilt 365 have?
4 recalls, covering steering, fuel system, diesel and power train.
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