Low Fan Control Primary Circuit
Table of contents
P1474 MERCURY Possible Causes
- Faulty Cooling Fan
- Faulty Cooling Fan Relay
- Cooling Fan harness is open or shorted
- Cooling Fan circuit poor electrical connection
How do I fix code P1474 MERCURY?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1474 MERCURY code
The cost of diagnosing the P1474 MERCURY code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
Cooling fan enabled Engine Control Module (ECM) detected excessive current draw or no voltage at all
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1474 MERCURY Description
Monitors the Low Fan Control (LFC) primary circuit output from the Powertrain Control Module (PCM). The test fails if the PCM grounds the LFC circuit, excessive current draw is detected on the LFC circuit, or with the LFC circuit not grounded by the PCM, voltage is not detected on the LFC circuit (the PCM expects to detect VPWR voltage coming through the low speed FC relay coil to the LFC circuit).