P278C
Kick Down Switch Circuit Low
P278C is an OBD-II diagnostic trouble code meaning: Kick Down Switch Circuit Low. Common causes: faulty kickdown switch, open or short circuit in the circuit. Estimated repair cost: $17–56.
Symptoms
- Reduced power during hard acceleration
- Car does not downshift during kickdown
- Check Engine light comes on
- Possible jerks during acceleration
Causes
- Faulty kickdown switch
- Open or short circuit in the circuit
- Poor contact in connectors
- Problems with the engine control unit
How to Fix
- Check the condition of the kickdown switch
- Check the integrity of wiring and connections
- Measure resistance and voltage in the circuit
- Replace the switch if necessary
- Reset the error code and check the system operation
Related codes
Error P278C by Vehicle Brand
FAQ
What does the P278C code mean?
P278C is an OBD-II diagnostic trouble code that indicates: Kick Down Switch Circuit Low
What causes a P278C error code?
The most common causes of P278C include: Faulty kickdown switch; Open or short circuit in the circuit; Poor contact in connectors; Problems with the engine control unit.
How do I fix a P278C diagnostic trouble code?
To fix P278C: Check the condition of the kickdown switch. Check the integrity of wiring and connections. Measure resistance and voltage in the circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P278C?
Limited driving only, diagnose soon
How much does it cost to fix P278C?
The estimated repair cost for P278C is $17–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat