TurboCaterpillar Diesel ECM

SPN 102 FMI 3

Name: ECM Performance
Address: Fort Lauderdale, FL, 33325, US
Telephone: (888) 768-2447
Price range: $$-$$$

Turbocharger boost control and air-handling faults.

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System

Caterpillar Turbo

Caterpillar ECM Service

Diagnostic Overview

CAT fault code 102-03 points to an intake manifold pressure or boost pressure sensor circuit voltage above normal. This is usually an electrical fault rather than a confirmed turbocharger failure. The ECM may see an unrealistically high boost value and may limit power to protect the engine. Before replacing the turbo, the sensor circuit, connector, and wiring should be checked carefully.

Likely Causes

Short to voltage; failed boost pressure sensor; open ground; corroded connector; water intrusion; damaged harness; incorrect sensor.

What To Check First

Check sensor reference voltage, ground, and signal voltage, inspect the connector, compare key-on engine-off pressure to barometric pressure, and repair wiring as needed.

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Related Turbo Fault Codes

View All Turbo Codes

SPN 102 FMI 0

CAT fault code 102-00 generally relates to intake manifold pressure or boost pressure being above the expected range.

SPN 102 FMI 1

CAT fault code 102-01 generally indicates intake manifold pressure or boost pressure below the expected range.

SPN 102 FMI 4

CAT fault code 102-04 indicates intake manifold pressure or boost pressure sensor voltage below normal.

SPN 102 FMI 7

CAT fault code 102-07 indicates the intake manifold pressure or boost system is not responding properly.

SPN 102 FMI 15

CAT fault code 102-15 usually indicates intake manifold pressure or boost pressure above normal at a least-severe level.

SPN 102 FMI 17

CAT fault code 102-17 generally means intake manifold pressure or boost pressure is below normal at a least-severe level.

View All Turbo Codes →