P0790
Normal/Performance Switch Circuit Malfunction
Generic code
Transmission System
High severity
Hard repair
Free on OBD DashX
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What P0790 means
- The fault code P0790 indicates a malfunction in the circuit of the normal/performance switch. This fault code typically points to an issue with the electrical circuitry or connection associated with the normal/performance switch, which is responsible for selecting between normal and performance modes in the vehicle's transmission system.
Possible symptoms
- Malfunction Indicator Lamp (MIL) or Check Engine Light illuminated
- Inability to switch between normal and performance modes in the transmission
- Unexpected or erratic behavior during gear shifts
- Reduced performance or responsiveness in the transmission
- Potential limited vehicle drivability in certain modes
Possible causes
- Faulty normal/performance switch
- Wiring or connection problems in the switch circuit
- Loose or corroded connectors in the transmission system
- Faulty transmission control module (TCM)
- Electrical or wiring issues in the transmission system
Related parts
- Transmission Shift Sensor: Gear Shift Sensor communicates the position the gear shifted to. Problems lead to difficulty in shifting gears
Possible solutions
- Test and replace the faulty normal/performance switch, if necessary
- Inspect and repair the switch circuit for any issues, such as damaged wires or connectors
- Ensure the connectors in the transmission system are secure and free from corrosion
- Test the transmission control module (TCM) for proper functionality and replace it if necessary
- Inspect and repair any electrical or wiring issues in the transmission system
Free on OBD DashX
P0790 on OBD DashX
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