Radiator Fan Control Relay Circuit
2007-2012 Dodge Caliber 1.8L I4 🇩🇪
Description
The PCM has detected a malfunction in the radiator fan control relay circuit. This relay controls the main cooling fan operation and its failure can lead to engine overheating.
Symptoms
- Check Engine Light
- Engine overheating
- Cooling fan not operating
- A/C system poor performance
- Temperature gauge rising in traffic
Common Causes
- Faulty radiator fan relay
- Corroded relay socket or connector
- Wiring damage in fan circuit
- Failed cooling fan motor
- PCM relay driver failure
Diagnostic Steps
- Test radiator fan relay operation
- Apply direct power to fan motor to test
- Inspect relay socket and wiring
- Check PCM relay control signal
- Verify fan motor ground circuit
Repair Notes
Replace the radiator fan relay and test the fan motor; repair wiring or replace fan motor if needed.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1491 on Other Vehicles
Common Questions
What does code P1491 mean on a 2007-2012 Dodge Caliber?
P1491 stands for "Radiator Fan Control Relay Circuit". The PCM has detected a malfunction in the radiator fan control relay circuit. This relay controls the main cooling fan operation and its failure can lead to engine overheating.
What are the symptoms of P1491 on a Dodge Caliber?
Common symptoms of P1491 include: Check Engine Light, Engine overheating, Cooling fan not operating, A/C system poor performance, Temperature gauge rising in traffic.
What causes P1491 on a 2007-2012 Dodge Caliber?
Common causes of P1491 include: Faulty radiator fan relay, Corroded relay socket or connector, Wiring damage in fan circuit, Failed cooling fan motor, PCM relay driver failure.