OilPress_RangeLow
Fault Type: Horn: Guardian: UFC: Transmission to Helm: Freeze Frame Priority:
Nonsticky Caution 100% 431‑25 Yes 2
Explanation
The oil pressure sensor does not appear to be working properly; the PCM received a signal that is below the valid limit.
Possible Causes
• Wiring problem
• Failed sensor
Summary of Fault Correction Possibilities
• Inspect the wiring to the sensor, and repair as necessary.
• Replace the sensor.
OilTemp_RangeHigh
Fault Type:
Horn: Guardian: UFC: Transmission to Helm: Freeze Frame Priority:
Nonsticky Caution 100% 531‑24 Yes 2
Explanation
The oil temperature 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.
OilTemp_RangeLow
Fault Type:
Horn: Guardian: UFC: Transmission to Helm: Freeze Frame Priority:
Nonsticky Caution 100% 531‑25 Yes 2
Explanation
The oil temperature sensor does not appear to be working properly; the PCM received a signal that is below 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.
R ..........
RxDoc1_SOH
Fault Type:
Horn: Guardian: UFC: Transmission to Helm: Freeze Frame Priority:
Sticky Critical 100% 4004‑6 Yes 3
Fault Codes
90-8M0146617 eng JULY 2018 © 2018 Mercury Marine Page 4A-31
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