OilLevel_Critically_Low
Fault Type: Horn: Guardian: UFC: Transmission to Helm: Freeze Frame Priority:
Nonsticky Caution 100% 713‑21 Yes 2
Explanation
The engine oil level appears to be low; the PCM received a signal from the oil level sensor that is lower than the specified
threshold.
Possible Causes
• Engine oil level low
• Wiring problem
• Defective sensor
Summary of Fault Correction Possibilities
• Add engine oil.
• Inspect the wiring to the sensor, and repair as necessary.
• Replace the sensor.
OilLevel_RangeHigh
Fault Type:
Horn: Guardian: UFC: Transmission to Helm: Freeze Frame Priority:
Nonsticky Caution 100% 711‑24 Yes 2
Explanation
The engine oil level sensor does not appear to be working properly; the PCM received a signal that is above the valid limit.
Possible Causes
• Wiring problem
• Defective sensor
Summary of Fault Correction Possibilities
• Inspect the wiring to the sensor, and repair as necessary.
• Replace the sensor.
OilLevel_Sensor_Faulted
Fault Type:
Horn: Guardian: UFC: Transmission to Helm: Freeze Frame Priority:
Nonsticky Caution 100% 711‑6 Yes 2
Explanation
The engine oil level sensor does not appear to be working properly.
Possible Causes
• Wiring problem
• Defective sensor
Summary of Fault Correction Possibilities
• Inspect the wiring to the sensor, and repair as necessary.
• Replace the sensor.
Fault Codes
90-8M0146617 eng JULY 2018 © 2018 Mercury Marine Page 4A-29
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