Powertrain
generic / SAE
P2782
Downshift Switch Circuit Intermittent/Erratic
The downshift switch signal jumps or drops out intermittently. 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 / 82
Possible causes
- Steering wheel connector loose high
- Wear in steering wheel clock spring contacts medium
- Connector with intermittent contact under vibration low
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–700 €
- Estimated time: 0.8–3 h
- Component: downshift switch
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012