PrototypeTarget-state workflow for the Service Engine operating model — illustrative data, not a production system.
Feedback Loop/FP-001

FP-001 — Recurring Front Sensor Communication Fault

Fleet-level technical problem generated from SE-1042 and related service events.

P1OEM Action Required3 Vehicles Exposed5 Linked Events12.4 Vehicle-Days LostNexus Technical OwnerIllustrative target-state workflow — not a production system

Feedback Loop

Individual service events become fleet-level engineering intelligence.

Uber owns the operational signal, prioritization, escalation, and closure governance. The OEM owns technical root cause and permanent corrective action.

Downtime breakdown

Where the Four Days Went

Initial triage6h
Waiting for OEM engineering guidance22h
Waiting for replacement parts52h
Repair execution10h
Validation and return to service6h
74 of 96 hours were spent waiting for external partner action.

The problem is not simply “a four-day repair.” The source of truth identifies exactly which constraint caused the downtime.

HardwareDocumentationParts SupplyOwnershipTrainingWarranty

Original Depot Signal

Open original service event
Service Event
SE-1042
Vehicle
AV-027
Depot
MTV-01 Mountain View
Mileage
14,820 miles
Initial Symptom
Loss of communication with front sensor controller
Safety Impact
Perception degraded — vehicle grounded
Evidence
DTC logs, technician photos, telematics file and inspection report
Operational Impact
One revenue-earning vehicle unavailable

From Depot Complaint to Engineering Problem Statement

Unstructured Feedback

“The vehicle has another sensor fault. It has been down for several days and we are still waiting for parts.”

Structured Technical Problem

Three front sensor communication failures occurred on the same vehicle within 60 days. Faults appeared under similar pre-dispatch operating conditions and generated the same diagnostic code. Initial inspection indicates connector or harness degradation. Five related service events have resulted in 12.4 cumulative vehicle-days of downtime.

Suspected fault domain
Sensor hardware / harness
Confidence
Medium
Repeatability
Confirmed
Fleet exposure
18 vehicles with the same configuration
Safety classification
P1 — vehicle grounding required
Business impact
Reduced fleet availability and repeated repair cost

Fleet Pattern Detection

5 Events
3 Vehicles
Same Component Family
60 days Window
12.4 Vehicle-Days Lost
EventVehicleNoteDowntime
SE-1042AV-027Current event6 days
SE-0918AV-027Previous occurrence2.1 days
SE-0764AV-027Previous occurrence1.8 days
SE-1031AV-042Similar fault1.4 days
SE-0987AV-055Similar fault1.1 days
Cumulative incidents (60-day window)
Formal package to OEM

OEM Action Package

Problem owner
Nexus Sensor Systems Engineering
Uber program owner
AV Fleet Service Operations
Severity
P1
OEM acknowledgment SLA
4 hours
Containment due
24 hours
Root cause due
5 business days
Permanent corrective action due
15 business days
Next executive review
Today, 4:00 PM
Requested OEM decisions
  1. Confirm technical ownership.
  2. Approve an interim inspection and connector replacement procedure.
  3. Confirm availability of replacement harness kits.
  4. Determine whether the condition affects additional VINs.
  5. Issue an updated diagnostic and repair bulletin.
  6. Provide permanent hardware corrective-action timing.
Closure Governance

Resolution Is More Than Returning One Vehicle to Service

  • OEM technical ownership acceptedComplete
  • Interim containment approvedComplete
  • Root cause confirmedIn Progress
  • Permanent corrective action issuedPending
  • Service documentation updatedPending
  • Affected fleet inspectedPending
  • Technician training completedPending
  • Field validation passedPending
  • Repeat-failure monitoring completedPending
Closure remains locked until all corrective-action and validation gates are complete.

Field Validation Plan

Vehicles validated
0 / 10
Miles accumulated
0 / 5,000
Observation period
Not started
Repeat failures
—

Cross-Partner Activity

  1. 06:14 · Prime
    Vehicle grounded after repeated sensor communication fault.
  2. 09:40 · Uber
    Event linked to two previous failures and converted into fleet problem FP-001.
  3. 11:15 · Nexus
    Requested connector photos and detailed DTC logs.
  4. 13:05 · Prime
    Complete evidence package uploaded.
  5. Day 2, 08:30 · Uber
    OEM acknowledgment SLA breached; escalated to Nexus technical manager.
  6. Day 2, 11:00 · Nexus
    Accepted hardware ownership and approved temporary inspection procedure.
  7. Day 3, 15:20 · Nexus
    Confirmed replacement harness shortage.
  8. Day 4, 10:10 · Uber
    Requested alternative supply decision and affected-fleet containment plan.