What does RAM fault code Manual Reset mean?

Q: What does RAM fault code Manual Reset mean?

Manual Reset indicates: Split temps (Hot/Cold); Air stuck on defrost or floor; No response to temp changes. Fix: LOGIC: HVAC Module has lost the "Home" position for the door actuators. ACTION: 1. Ignition switch in the on position. 2. Hold A/C & Recirculate buttons for 10 seconds. 3. Wait for lights to stop flashing. FIX: Recalibration successful if temps equalize. If clicking continues, the actuator gear is stripped.

RAM Fault Code

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Manual Reset

Split temps (Hot/Cold); Air stuck on defrost or floor; No response to temp changes.

System

HVAC

Symptom

Split temps (Hot/Cold); Air stuck on defrost or floor; No response to temp changes.

Diagnosis & fix steps

LOGIC: HVAC Module has lost the "Home" position for the door actuators. ACTION: 1. Ignition switch in the on position. 2. Hold A/C & Recirculate buttons for 10 seconds. 3. Wait for lights to stop flashing. FIX: Recalibration successful if temps equalize. If clicking continues, the actuator gear is stripped.

Red Seal field insights

If the reset fails to equalize temps, the Driver-side blend actuator is likely dead. It is located just above the gas pedal on the side of the HVAC box. It's a tight fit, but you can change it without pulling the whole dash.

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.

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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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