TEXAS EMISSIONS INSPECTIONS FINAL EXAM 2026
QUESTIONS AND SOLUTIONS SCORED A+
✔✔What should the MIL do during key-on engine-off (KOEO)? - ✔✔Illuminate briefly.
✔✔MIL does not illuminate during KOEO - ✔✔Vehicle fails.
✔✔What is emissions tampering? - ✔✔Removing or disabling emission control
components.
✔✔Evidence of emissions tampering result - ✔✔Automatic failure.
✔✔Catalytic converter tampering includes - ✔✔Removal, hollowing, or non-approved
replacement.
✔✔Correct OBD II inspection sequence - ✔✔Visual check → DLC connection → MIL
check → Readiness check.
✔✔Inspection station equipment requirement - ✔✔Must use state-approved equipment.
✔✔How inspection data must be handled - ✔✔Transmitted electronically.
✔✔Inspector certification requirement - ✔✔Must be certified to perform emissions
inspections.
✔✔Unauthorized inspections consequence - ✔✔Suspension or penalties.
✔✔Vehicle emissions inspection frequency - ✔✔Annually
✔✔When do OBD II self-tests run? - ✔✔During normal driving conditions
✔✔Purpose of a drive cycle - ✔✔To complete readiness monitors
✔✔Clearing codes before inspection risk - ✔✔Causes Not Ready failure.
✔✔Who can repair a failed vehicle? - ✔✔The owner or a recognized repair facility.
✔✔Result of passing emissions inspection - ✔✔Certificate issued.
✔✔Result of failing emissions inspection - ✔✔Repairs required before registration.
✔✔ Purpose of the Texas Emissions Program - ✔✔To reduce air pollution caused by
motor vehicle emissions.
QUESTIONS AND SOLUTIONS SCORED A+
✔✔What should the MIL do during key-on engine-off (KOEO)? - ✔✔Illuminate briefly.
✔✔MIL does not illuminate during KOEO - ✔✔Vehicle fails.
✔✔What is emissions tampering? - ✔✔Removing or disabling emission control
components.
✔✔Evidence of emissions tampering result - ✔✔Automatic failure.
✔✔Catalytic converter tampering includes - ✔✔Removal, hollowing, or non-approved
replacement.
✔✔Correct OBD II inspection sequence - ✔✔Visual check → DLC connection → MIL
check → Readiness check.
✔✔Inspection station equipment requirement - ✔✔Must use state-approved equipment.
✔✔How inspection data must be handled - ✔✔Transmitted electronically.
✔✔Inspector certification requirement - ✔✔Must be certified to perform emissions
inspections.
✔✔Unauthorized inspections consequence - ✔✔Suspension or penalties.
✔✔Vehicle emissions inspection frequency - ✔✔Annually
✔✔When do OBD II self-tests run? - ✔✔During normal driving conditions
✔✔Purpose of a drive cycle - ✔✔To complete readiness monitors
✔✔Clearing codes before inspection risk - ✔✔Causes Not Ready failure.
✔✔Who can repair a failed vehicle? - ✔✔The owner or a recognized repair facility.
✔✔Result of passing emissions inspection - ✔✔Certificate issued.
✔✔Result of failing emissions inspection - ✔✔Repairs required before registration.
✔✔ Purpose of the Texas Emissions Program - ✔✔To reduce air pollution caused by
motor vehicle emissions.
