P078F
Transmission Mode Switch C Circuit
P078F is an OBD-II diagnostic trouble code meaning: Transmission Mode Switch C Circuit. Common causes: transmission mode switch malfunction, open or short circuit in the circuit. Estimated repair cost: $17–56.
Symptoms
- Delayed gear shifting
- The transmission goes into emergency mode
- Inability to switch between modes
- Check Engine Light Is On
- Loss of engine power
Causes
- Transmission mode switch malfunction
- Open or short circuit in the circuit
- Poor contact in connectors
- Wiring harness damage
- Problems with the transmission control unit
How to Fix
- Check the continuity of the switch circuit
- Inspect connectors and contacts for corrosion
- Test the mode switch with a multimeter
- Check circuit resistance
- If necessary, replace the mode switch
Related codes
Error P078F by Vehicle Brand
FAQ
What does the P078F code mean?
P078F is an OBD-II diagnostic trouble code that indicates: Transmission Mode Switch C Circuit
What causes a P078F error code?
The most common causes of P078F include: Transmission mode switch malfunction; Open or short circuit in the circuit; Poor contact in connectors; Wiring harness damage.
How do I fix a P078F diagnostic trouble code?
To fix P078F: Check the continuity of the switch circuit. Inspect connectors and contacts for corrosion. Test the mode switch with a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P078F?
Limited driving only, diagnose soon
How much does it cost to fix P078F?
The estimated repair cost for P078F is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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