TurboMack Diesel ECM

PID 103

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

Mack Turbo

Mack ECM Service

Diagnostic Overview

Mack fault code PID103 generally relates to turbocharger boost pressure or intake manifold pressure feedback. Incorrect boost pressure data can cause low power, smoke, overboost, underboost, and derate complaints. The issue may be an actual air-handling problem or a sensor/circuit issue.

Likely Causes

Boost leak; charge-air cooler leak; faulty boost pressure sensor; restricted air filter; turbocharger issue; exhaust leak; wiring fault.

What To Check First

Compare boost pressure with key-on/engine-off and under load, inspect the charge-air system, and check the sensor and wiring.

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Internal Linking

Related Turbo Fault Codes

View All Turbo Codes

SPN 103 FMI 0

Mack fault code SPN1030 generally indicates turbocharger boost pressure above the expected range.

SPN 103 FMI 1

Mack fault code SPN1031 generally indicates turbocharger boost pressure below the expected range.

SPN 103 FMI 9

Mack fault code SPN1039 generally indicates abnormal update rate or communication-related boost pressure data.

SPN 1127 FMI 14

Mack fault code SPN112714 is generally related to turbocharger or air-management performance requiring special diagnostic action.

SPN 1127 FMI 18

Mack fault code SPN112718 generally indicates a turbocharger or air-management value below the expected range.

SPN 641 FMI 13

Mack fault code SPN64113 points to a VGT actuator calibration or out-of-calibration condition.

View All Turbo Codes →