An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD...
Kenworth technical service bulletin E271 for 2014-2018 Kenworth T680, 2014-2018 Peterbilt 579 and 2014-2018 Kenworth T800 and others.
- Bulletin number
- E271
- Component
- Engine and engine cooling
- Summary
- An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system software related issues.
Owners of these vehicles have filed 11 complaints in the engine category.
Vehicles covered
- Kenworth T680 2014-2018 20142015201620172018
- Peterbilt 579 2014-2018 20142015201620172018
- Kenworth T800 2014-2018 20142015201620172018
- Kenworth W900 2014-2018 20142015201620172018
- Peterbilt 389 2014-2018 20142015201620172018
- Kenworth T880 2014-2018 20142015201620172018
- Peterbilt 567 2014-2018 20142015201620172018
- Peterbilt 587 2014-2018 20142015201620172018
- Peterbilt 520 2014-2018 20142015201620172018
- Peterbilt 320 2014-2018 20142015201620172018
- Peterbilt 365 2014-2018 20142015201620172018
- Peterbilt 367 2014-2018 20142015201620172018
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