Service Code 22

System

LICCON 1/2

Symptom

Not specified

Diagnosis & fix steps

Actuator Motor Calibration. LOGIC: Forces the recirculation, defrost, and blend flaps to travel from stop-to-stop to "learn" the potentiometer limits.

Red Seal field insights

If the cab is blowing hot on one side and cold on the other, the blend flap has "lost its home." Run this calibration. If it fails, the plastic drive gear on the motor is likely cracked.

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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