P278B
Kick Down Switch Circuit Range/Performance
P278B is an OBD-II diagnostic trouble code meaning: Kick Down Switch Circuit Range/Performance. Common causes: kick down button malfunction, open or short circuit in the circuit. Estimated repair cost: $17–56.
Symptoms
- No response when pressing the Kick Down button
- Switching to emergency mode
- The Check Engine light comes on
- Reduced acceleration dynamics
- Unexpected activation of Kick Down mode
Causes
- Kick Down button malfunction
- Open or short circuit in the circuit
- Wiring harness damage
- Poor contact in connectors
- Problems with the engine control unit
How to Fix
- Check the operation of the Kick Down button
- Diagnose the circuit for open circuit and short circuit
- Inspect the condition of connectors and wires
- Test button resistance
- If necessary, replace the Kick Down button
Related codes
Error P278B by Vehicle Brand
FAQ
What does the P278B code mean?
P278B is an OBD-II diagnostic trouble code that indicates: Kick Down Switch Circuit Range/Performance
What causes a P278B error code?
The most common causes of P278B include: Kick Down button malfunction; Open or short circuit in the circuit; Wiring harness damage; Poor contact in connectors.
How do I fix a P278B diagnostic trouble code?
To fix P278B: Check the operation of the Kick Down button. Diagnose the circuit for open circuit and short circuit. Inspect the condition of connectors and wires. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P278B?
Limited driving only, diagnose soon
How much does it cost to fix P278B?
The estimated repair cost for P278B is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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