Xe-Series Fault Code
Free · no signupA:4805
Air Filter Service.
System
Warning
Symptom
Air Filter Service.
Diagnosis & fix steps
LOGIC: The pressure drop across the intake filter is too high.
Red Seal field insights
The "Vacuum Switch" on the air intake has tripped. If the filter looks clean, check the small plastic hose leading to the switch; it often gets brittle and cracks, causing a false alarm.
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.
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.
Track this across your whole fleet
This code is free to read. AM Fleet Integrity lets your team log fault codes against assets, plus the full fault-code library, QR operator reporting, PM scheduling and predictive alerts. Start free — no credit card required.
Start your free trialRelated Xe-Series fault codes
- A:5420Communication Error.
- A:4804Service Due.
- A:2121Low Sump Pressure.
- A:2119High Package Temp.
- A:2118High Airend Temp.
- A:2111High Discharge Pressure.
- E:0010Machine stops instantly; Emergency Stop symbol flashes.
- E:0115Sensor Fault; Machine will not start.
- E:0119Shutdown on High Pressure.
- E:0125Sensor Fault; Temperature error.