What does Scania fault code 11181 (SPN 102 FMI 2) mean?

Q: What does Scania fault code 11181 (SPN 102 FMI 2) mean?

11181 (SPN 102 FMI 2) indicates: Engine derate (Torque reduction); High fuel consumption; "Lazy" turbo response. Fix: Charge Air Pressure (Boost) Implausible. LOGIC: The ECM compares the Boost sensor to the Baro sensor at key-on. If they differ by more than 50 mbar, it triggers a fault. ACTION: 1. Remove boost sensor and check for oil/soot clogging. 2. Verify VGT actuator movement. 3. Check for intake leaks at the rubber boots. FIX: Clean or replace the Charge Air Pressure Sensor.

Scania Fault Code

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11181 (SPN 102 FMI 2)

Engine derate (Torque reduction); High fuel consumption; "Lazy" turbo response.

System

Not specified

Symptom

Engine derate (Torque reduction); High fuel consumption; "Lazy" turbo response.

Diagnosis & fix steps

Charge Air Pressure (Boost) Implausible. LOGIC: The ECM compares the Boost sensor to the Baro sensor at key-on. If they differ by more than 50 mbar, it triggers a fault. ACTION: 1. Remove boost sensor and check for oil/soot clogging. 2. Verify VGT actuator movement. 3. Check for intake leaks at the rubber boots. FIX: Clean or replace the Charge Air Pressure Sensor.

Red Seal field insights

The DC16 V8 has a massive intake manifold. A small crack in a silicone coupler or a loose T-bolt clamp on the charge pipes will often cause this "implausible" code rather than a "low pressure" code.

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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