Group 28 Troubleshooting MID 128 PID 153 Crankcase Pressure 27 Type of fault: FMI Description: Fault Condition: Possible Symptoms: Possible Cause: FMI 0 • Data valid but above normal operational range • Out of range, max voltage, illegal • Critically Above Range • Forced idle • Engine shut down • The non-filtered pressure difference (between crankcase pressure and ambient air pressure) is/was above limit.
(The fault code will remain during the entire driving cycle (unless reset) FMI 1 • Data valid but below normal operational range • Out of range, min voltage, illegal • N/A • Crankcase Pressure Sensor out of range FMI 2 • Data erratic, intermittent or incorrect • Plausibility • N/A • The crankcase pressure is showing either too high or too low value (abnormal value) FMI 3 • Voltage above normal or shorted to high source • Short Circuit +, Measuring line • Open Circuit, Ground line • N/A • Crankcase Pressure Sensor failure • Faulty harness FMI 5 • Current below normal or open circuit • Open Circuit +, 5V Supply Line • Short Circuit -, Measuring line • Open Circuit, Measuring line • N/A • Crankcase Pressure Sensor failure • Faulty harness