Radiator Fan Relay Circuit Condition
Table of contents
P1491 DODGE Possible Causes
- Faulty Radiator Fan Control Relay
- Radiator Fan Control Relay harness is open or shorted
- Radiator Fan Control Relay circuit poor electrical connection
How do I fix code P1491 DODGE?
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 P1491 DODGE code
The cost of diagnosing the P1491 DODGE 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
The Powertrain Control Module (PCM) has detected an open or shorted condition in the radiator fan relay circuit
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1491 DODGE Description
With the key on or engine running, system voltage over 10v, fan relay commanded on, the Powertrain Control Module (PCM) detects a shorted or open condition in the relay control circuit. Test the fan relay resistance (it should be 30-70 ohms). Refer to code repair chart in other manuals or media.