Powertrain
generic / SAE
P278C
Kick Down Switch Circuit Low
Voltage on the kick-down switch line is below the expected window. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number7 / 8C
Possible causes
- Switch wire shorted to ground high
- Switch stuck closed medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 60–400 €
- Estimated time: 0.3–1.5 h
- Component: kickdown switch
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012