P1491
Secondary Switch Solenoid Circuit Malfunction.
- Generic
- Powertrain
- Manufacturer code
How this code is built
- P
- SystemPowertrain
- 1
- Defined byThe manufacturer
- 4
- AreaAuxiliary emission controls
- 91
- FaultThe specific fault in that area
Guide
Writing the guide for P1491. The first open of a code takes up to a minute.
This code for other makes
- P1491AcuraEGR Valve Lift Insufficient Detected
- P1491DodgeRadiator Fan Control Relay Circuit Open Or Shorted
- P1491HondaEGR Valve Lift Insufficient Detected
- P1491InfinitiEGR Valve Lift Insufficient Detected
- P1491JeepRadiator Fan Control Relay Circuit Open Or Shorted
- P1491NissanVacuum Cut Valve Bypass Valve
- P1491OtherSecondary Switch Solenoid Circuit Malfunction
- P1491PlymouthRadiator Fan Control Relay Circuit Open Or Shorted
- P1491PontiacRadiator Fan Control Relay Circuit Open Or Shorted