P1491 OBD Trouble Code
1 result found
| Type | Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled |
|---|---|
| Description | Radiator Fan Relay Circuit Conditions |
| Cause | Key on or engine running, system voltage over 10v, fan relay commanded on, then the PCM detected 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. |
Try also: https://www.obd-codes.com/p1491
