Powertrain
generic / SAE
P0719
Brake Switch B Circuit Low
The transmission control system sees the brake switch B input below the lower threshold. Used to release torque converter lockup on braking.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / 19
Possible causes
- Brake switch defective high
- Wiring shorted to ground medium
- Connector pins corroded - high contact resistance 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: easy
- DIY: possible
- Estimated cost: 50–250 €
- Estimated time: 0.3–1 h
- Component: brake switch
- Component: switch wiring
- MIL / check engine light
Sources
References
sae:J2012