- The problem
- PACCAR Incorporated (PACCAR) is recalling certain 2021-2025 Peterbilt and Kenworth vehicles, equipped with Bendix EC80 Advanced Electronic Control Units (ECU). Please see the recall report for a complete list of models. Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop functioning.
- The risk
- Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may not function properly or at all, increasing the risk of a crash.
- The fix
- Dealers will reprogram the ECU software, free of charge. Owner notification letters were mailed February 3, 2025. Owners may contact Kenworth's customer service at 1-425-828-5888 and Peterbilt's customer service at 1-940-591-4220. PACCAR's numbers for this recall are 24KWL and 24PBL.
Vehicle safety record
2021 Peterbilt 348 Problems, complaints & recalls
No owner complaints about the 2021 Peterbilt 348 have been filed with NHTSA. It is covered by 4 recalls, the latest in December 2024 for the control unit / module.
NHTSA data checked
CAbout as many problems as a typical 348 year, for its age
- Complaints
- 0
- Recalls
- 4
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
2021 Peterbilt 348 recalls 4
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
- The problem
- 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.
- The risk
- A fuel leak in the presence of an ignition source increases the risk of a fire.
- The fix
- 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.
- The problem
- PACCAR Incorporated (PACCAR) is recalling certain 2021 Peterbilt 348 and 579 vehicles. The spring brake chamber may have been assembled with incorrect springs that were out of specification, which may cause the pressure plate to shift.
- The risk
- The pressure plate may tear the diaphragm, causing a loss of air pressure and increasing the risk of a crash.
- The fix
- Dealers will replace brake chambers, free of charge. Owner notification letters were mailed on July 9, 2021. Owners may contact PACCAR (Peterbilt) customer service at 1-940-591-4220. PACCAR's number for this recall is 21PBE.
- The problem
- 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.
- The 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.
- The fix
- 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.
What owners say
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No complaints about the 2021 Peterbilt 348 yet
No owner has filed a complaint about this vehicle with NHTSA. If yours has a problem, share it here and report it to NHTSA.
Peterbilt 348: every year compared
All 348 years2021 Peterbilt 348 vs rivals
| Vehicle | Complaints | Recalls | Grade | |
|---|---|---|---|---|
| 2021 Peterbilt 348 | 0 | 4 | C | |
| 2021 Peterbilt 389 | 1 | 6 | C | Compare |
More sales usually means more complaints, so compare similar vehicles of the same year. The grade compares each vehicle with its own model's other years.
Questions about the 2021 Peterbilt 348
Does the 2021 Peterbilt 348 have any recalls?
Yes - NHTSA lists 4 recalls for the 2021 Peterbilt 348: control unit / module (December 2024); fuel rail (May 2021); chamber (May 2021); axle assembly (August 2020). Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
How many complaints has the 2021 Peterbilt 348 had?
None have been filed with NHTSA so far.
Is the 2021 Peterbilt 348 a reliable vehicle?
Its Safety Index is 41 out of 100 (grade C: about as many problems as a typical Peterbilt 348 year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
What should I do if my 2021 Peterbilt 348 has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data