Other Fault Code
Free · no signupMID 128 PID 94
Engine cuts out; Low power; Gauge "dancing."
System
Volvo (V-ECU)
Symptom
Engine cuts out; Low power; Gauge "dancing."
Diagnosis & fix steps
Fuel Delivery Pressure Low.
LOGIC: The sensor on the secondary filter head is seeing pressure below the 3.5 bar threshold.
ACTION: 1. Check the "Hand Primer" pump for air leaks.
2. Inspect the overflow valve (relief) on the back of the head.
FIX: Replace the Fuel Transfer Pump or the Overflow Valve.
Red Seal field insights
Volvo engines are notorious for "air ingress" at the fuel filter housing. If the machine starts fine but dies after 10 minutes, the filter housing is likely cracked or the seal is "sucking" air under load.
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.
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