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P1491 RAM Code - Radiator Fan Relay Circuit Condition

- Code Popularity: 465 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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Code P1491 RAM Possible Causes

  • Faulty Radiator Fan Control Relay
  • Radiator Fan Control Relay harness is open or shorted
  • Radiator Fan Control Relay circuit poor electrical connection
  • Faulty Radiator Fan

How do I Fix the Code P1491 RAM?

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.

Does your RAM have Safety Recalls? → Check here

What is the Cost to Diagnose the Code P1491 RAM?

Labor: 1.0

The cost of diagnosing the P1491 RAM 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 P1491 RAM Detected?

The Powertrain Control Module (PCM) has detected an open or shorted condition in the radiator fan relay circuit

What are Code P1491 RAM Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1491 RAM Description

With the key on or engine running, system voltage over 10v, fan relay commanded on, the Powertrain Control Module (PCM) sets the Diagnostic Trouble Code (DTC) when it detects a shorted or open condition in the relay control circuit. Test the fan relay resistance (it should be 30-70 ohms).

OBDII Code P1491 RAM - Radiator Fan Relay Circuit Condition -
P1491 RAM Code - Radiator Fan Relay Circuit Condition

Need More Information on the P1491 RAM Code?

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Need Help with the P1491 RAM Code?

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Code P1491 RAM comments

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