P0790
Normal/Performance Switch Circuit
P0790 is an OBD-II diagnostic trouble code meaning: Normal/Performance Switch Circuit. Common causes: open or short circuit in switch circuit, mode switch malfunction. Estimated repair cost: $17–89.
Symptoms
- Switching to emergency transmission mode
- Limiting the number of available transfers
- Check Engine Light Illuminates
- Deterioration in acceleration dynamics
- Unstable gear shifting
Causes
- Open or short circuit in switch circuit
- Mode switch malfunction
- Wiring Harness Problems
- Transmission control module malfunction
- Poor contact in connectors
How to Fix
- Check the continuity of the switch circuit
- Check the condition of connectors and contacts
- Test the mode switch
- Check the operation of the transmission control module
- Replace faulty components
Related codes
Error P0790 by Vehicle Brand
FAQ
What does the P0790 code mean?
P0790 is an OBD-II diagnostic trouble code that indicates: Normal/Performance Switch Circuit
What causes a P0790 error code?
The most common causes of P0790 include: Open or short circuit in switch circuit; Mode switch malfunction; Wiring Harness Problems; Transmission control module malfunction.
How do I fix a P0790 diagnostic trouble code?
To fix P0790: Check the continuity of the switch circuit. Check the condition of connectors and contacts. Test the mode switch. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0790?
Limited driving only, diagnose soon
How much does it cost to fix P0790?
The estimated repair cost for P0790 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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