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SPN 1192 — Turbocharger Wastegate Actuator Control Air Pressure

Safe to driveDrivable, but watch it yourself

J1939 code SPN 1192. Below — how the fault is worded at the factory by KAMAZ, MAZ, SITRAK and YaMZ, and what the second half of the code (FMI) means in the standard.

KAMAZMAZSITRAKYaMZ

KAMAZ

FMI 2Boost pressure regulator: short circuit / open circuit / overheating
FMI 3Boost pressure regulator (BPA) channel ADC
FMI 4Boost pressure regulator (BPA) channel ADC
FMI 12Boost pressure regulator (BPA) channel ADC

MAZ

FMI 2Boost pressure control circuit fault - Overheating. Blink code: 3-4-4. Repair: Check the boost pressure control actuator and its wiring.
FMI 3Boost pressure control circuit fault - Signal above the target range. Blink code: 3-4-4. Repair: Check the boost pressure control actuator and its wiring.
FMI 4Boost pressure control circuit fault - Signal below the target range. Blink code: 3-4-4. Repair: Check the boost pressure control actuator and its wiring.
FMI 12Boost pressure control circuit fault - Actuator current exceeded. Blink code: 3-4-4. Repair: Check the boost pressure control actuator and its wiring.

SITRAK

FMI 3High WGP voltage, or high wastegate actuation gas supply pressure
FMI 4Low WGP voltage, or low wastegate actuation gas supply pressure
FMI 7Unable to reach higher WGP opening

YaMZ

FMI 2Boost pressure control circuit fault (Overheating). Blink code: 3-4-4. Repair: Check the boost pressure control actuator and its wiring.
FMI 3Boost pressure control circuit fault (Signal above target range). Blink code: 3-4-4. Repair: Check the boost pressure control actuator and its wiring.
FMI 4Boost pressure control circuit fault (Signal below target range). Blink code: 3-4-4. Repair: Check the boost pressure control actuator and its wiring.
FMI 12Boost pressure control circuit fault (Actuator current exceeded). Blink code: 3-4-4. Repair: Check the boost pressure control actuator and its wiring.

What FMI means in J1939

SPN 1192 FMI 21192/2 · 1192.2data erratic or intermittent
SPN 1192 FMI 31192/3 · 1192.3voltage above normal or shorted high
SPN 1192 FMI 41192/4 · 1192.4voltage below normal or shorted to ground
SPN 1192 FMI 71192/7 · 1192.7mechanical system not responding
SPN 1192 FMI 121192/12 · 1192.12faulty device or component

Can I keep driving

Safe to drive. Below — how much time you have and what happens if you keep going.

What happens if you keep driving

Time you have: Drivable, but watch it yourself

This is an electrical fault: an open, a short or a bad contact in the sensor circuit. The value it measures is most likely fine.

You can drive. But until the circuit is repaired this system runs blind and cannot warn you about a real failure.

Nearby: other

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