E5

System

Diagnostic

Symptom

Not specified

Diagnosis & fix steps

Evaporator Temperature Sensor. LOGIC: The "Anti-Ice" sensor is reporting an open circuit or short.

Red Seal field insights

If this sensor fails, the evaporator will freeze into a block of ice, and airflow will stop. The sensor is usually tucked deep in the heater box; check the pigtail for moisture before pulling the dash apart.

Same code keeps coming back?

That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.

Book an uptime review

Read before you touch anything

This is general reference information, not a repair manual. It is for trained, qualified technicians.
Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.

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