DEF sensor was faulty and could have caused vehicle to not exceed 5MPH. If it had happened on an interstate or other major highway, it would be a major safety concern! The DEF sensor had to be replaced. My understanding is that this can also be caused by surpassing the DEF fluid "shelf life" and, unlike diesel trucks, motorhomes are often stationary for extended periods. The failure was indicated by warning lights in the dash. If the DEF sensor goes bad in a motorhome, the engine should still perform until the sensor can be repaired or r…
1 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.
18V341000 · Structure:Body:Door
Reported: 2018-05-25 (May 25, 2018)
Tiffin Motorhomes, Inc. (Tiffin) is recalling certain 2018-2019 Tiffin Allegro RED, Allegro Open Road, Breeze, Bus, Phaeton, and Zephyr motorhomes. The entry door on these vehicles may have been improperly assembled, allowing the door to open while the vehicle is moving.
Consequence: If the door comes open while the motorhome is moving, there is an increased risk of injury to the motorhome occupants.
Remedy: Tiffin will notify owners, and dealers will adjust the door lock mechanism, free of charge. The recall began on June 18, 2018. Owners may contact Tiffin customer service at 1-256-356-8661. Tiffin's number for this recall is TIF-110.
Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
1 unique complaints in this selection. Analysis snapshot: 2026-10-01.
0.0%Usable mileage0 / 1 records
100.0%Valid incident date1 / 1 records
100.0%Valid filing date1 / 1 records
100.0%Ordered incident and filing dates1 / 1 records
Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.
Problems by model year
Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.
Component complaint heatmap
Component
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
Fuel/Propulsion System
0Unavailable
No examples available for this selection.
0Unavailable
No examples available for this selection.
0Unavailable
No examples available for this selection.
00.0%
No examples available for this selection.
0Unavailable
No examples available for this selection.
0Unavailable
No examples available for this selection.
0Unavailable
No examples available for this selection.
0Unavailable
No examples available for this selection.
0Unavailable
No examples available for this selection.
1100.0%ODI 11442277
DEF sensor was faulty and could have caused vehicle to not exceed 5MPH. If it had happened on an interstate or other major highway, it would be a major safety concern! The DEF sensor had to be replaced. My understanding is that this can also be caused by surpassing the DEF fluid "shelf life" and, unlike diesel trucks, motorhomes are often stationary for extended periods. The failure was indicated by warning lights in the dash. If the DEF sensor goes bad in a motorhome, the engine should still perform until the sensor can be repaired or r…
THE TWO MOST SERIOUS DEFECTS ARE A CRACKED FRAME OVER THE REAR DIFFERENTIAL (ON THE PASSENGER SIDE) AND INOPERABLE FRONT BRAKES. IT WAS DETERMINED BY THE MANUFACTURER'S AUTHORIZED SERVICE CENTER THAT THE FRONT BRAKES HAVE NEVER WORKED BECAUSE OF A DESIGN FLAW. PER THE MANUFACTURER'S SERVICE CENTER (ATEL BUS & TRUCK , BELTSVILLE MD) "THE SLACK ADJUSTERS ARE TOUCHING THE KNUCKLE AND/OR TOP OF THE KING PIN WHEN APPLIED - TOUCHING KEEPS THE SLACK ADJUSTER FROM TRAVELING FAR ENOUGH TO APPLY THE BRAKE SHOES TO THE DRUM. FOUND COBWEBS IN THE BRAKE…
THE TWO MOST SERIOUS DEFECTS ARE A CRACKED FRAME OVER THE REAR DIFFERENTIAL (ON THE PASSENGER SIDE) AND INOPERABLE FRONT BRAKES. IT WAS DETERMINED BY THE MANUFACTURER'S AUTHORIZED SERVICE CENTER THAT THE FRONT BRAKES HAVE NEVER WORKED BECAUSE OF A DESIGN FLAW. PER THE MANUFACTURER'S SERVICE CENTER (ATEL BUS & TRUCK , BELTSVILLE MD) "THE SLACK ADJUSTERS ARE TOUCHING THE KNUCKLE AND/OR TOP OF THE KING PIN WHEN APPLIED - TOUCHING KEEPS THE SLACK ADJUSTER FROM TRAVELING FAR ENOUGH TO APPLY THE BRAKE SHOES TO THE DRUM. FOUND COBWEBS IN THE BRAKE…
Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.
Failure mileage by component
Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.
Component failure mileage distribution
Component
Mileage range (25th–75th percentile)
Median
Usable records
Examples
No usable records for this analysis.
Complaint and recall timeline
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.
Monthly counts, recall campaigns and complaint examples
Monthly complaint and recall timeline
Month
Complaints
Campaigns announced
Examples
2024-11
0
None
No examples available for this selection.
2024-12
0
None
No examples available for this selection.
2025-01
0
None
No examples available for this selection.
2025-02
0
None
No examples available for this selection.
2025-03
0
None
No examples available for this selection.
2025-04
0
None
No examples available for this selection.
2025-05
0
None
No examples available for this selection.
2025-06
0
None
No examples available for this selection.
2025-07
0
None
No examples available for this selection.
2025-08
0
None
No examples available for this selection.
2025-09
0
None
No examples available for this selection.
2025-10
0
None
No examples available for this selection.
2025-11
0
None
No examples available for this selection.
2025-12
0
None
No examples available for this selection.
2026-01
0
None
No examples available for this selection.
2026-02
0
None
No examples available for this selection.
2026-03
0
None
No examples available for this selection.
2026-04
0
None
No examples available for this selection.
2026-05
0
None
No examples available for this selection.
2026-06
0
None
No examples available for this selection.
2026-07
0
None
No examples available for this selection.
2026-08
0
None
No examples available for this selection.
2026-09
0
None
No examples available for this selection.
2026-10 (partial)
0
None
No examples available for this selection.
Emerging complaint spikes
Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.
This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.
No complete months meet the spike thresholds for this selection.
Equal-age model-year comparison
Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.
2018: 0 complaints · 2019: 1 complaints
Equal observation windows
Model year
Through age 0
Through age 1
Through age 2
2018
0
0
0
2019
0
0
1
Date coverage across each selected cohort
Date basis for all complaints in selected model years
Year
Incident dates used
Filing date fallbacks
Excluded dates
2018
0
0
0
2019
1
0
0
Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.
Components reported together
Each cell counts unique complaints naming both components. Open a nonzero cell for examples.
Component co-occurrence matrix
Component
Fuel/Propulsion System
Fuel/Propulsion System
—
Co-reporting does not establish that one component caused another concern.
Recurring narrative patterns
Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.
1 patterns with matching reports.
Warning lights and dashboard alerts
1 mentions · 100.0% of complaints
Median mileage: Unavailable (0 usable records).
ODI 11442277
DEF sensor was faulty and could have caused vehicle to not exceed 5MPH. If it had happened on an interstate or other major highway, it would be a major safety concern! The DEF sensor had to be replaced. My understanding is that this can also be caused by surpassing the DEF fluid "shelf life" and, unlike diesel trucks, motorhomes are often stationary for extended periods. The failure was indicated by warning lights in the dash. If the DEF sensor goes bad in a motorhome, the engine should still perform until the sensor can be repaired or r…