What Does C1295 Mean?
The brake lamp switch circuit is detected as permanently open — the ABS/ESC module never sees the switch close regardless of brake pedal activity. This means the module cannot tell when the driver is braking, which affects ABS engagement timing, ESC brake pressure calculations, and Brake Assist activation. Brake lights may also not be working at all.
Safety Warning
If brake lights are not working, this is a critical safety hazard and a moving violation in all jurisdictions. Following vehicles will receive no warning of braking. Additionally, ABS timing and Brake Assist may be impaired. Do not drive in traffic until this is repaired. The fix is almost always simple: a new switch, bumper pad, or fuse.
Common Causes
30%
Brake lamp switch failed in the open position (worn contacts or broken mechanism)
25%
Brake lamp switch connector disconnected or fallen off the mounting
20%
Missing or broken brake pedal bumper pad preventing switch actuation
15%
Open circuit in the brake switch wiring (broken wire, blown fuse)
10%
Wrong brake switch installed (incorrect travel length for the application)
Diagnostic Steps
1
Check brake lights immediately — have someone observe while you press the pedal. If no brake lights illuminate at all, this confirms the open circuit and is a safety-critical issue.
2
Locate the brake lamp switch under the dash at the brake pedal arm. Verify it is physically present, properly seated in its mounting, and the connector is firmly attached.
3
Check the brake light fuse in the fuse box — a blown fuse will open the entire brake light circuit. Replace if blown and check for a short that may have caused it.
4
Test the brake switch: disconnect the connector and jumper the switch output pins briefly — if brake lights illuminate with the jumper, the switch is faulty. If they do not, the fault is downstream in the wiring or fuse circuit.
5
Examine the brake pedal bumper pad — this small rubber or plastic piece on the pedal arm contacts the switch plunger. If missing, the switch cannot be actuated. Replace with the correct OEM part and verify switch engagement.
Estimated Repair Cost
$10 - $150
Parts + labor, varies by vehicle and location
The brake lamp switch circuit is detected as permanently open — the ABS/ESC module never sees the switch close regardless of brake pedal activity. This means the module cannot tell when the driver is braking, which affects ABS engagement timing, ESC brake pressure calculations, and Brake Assist acti...
The most common cause of C1295 (Brake Lamp Switch Circuit Open) is: Brake lamp switch failed in the open position (worn contacts or broken mechanism)
Typical repair costs for C1295 range from $10 to $150, depending on the vehicle, location, and whether you do it yourself or go to a shop.
If brake lights are not working, this is a critical safety hazard and a moving violation in all jurisdictions. Following vehicles will receive no warning of braking. Additionally, ABS timing and Brake Assist may be impaired. Do not drive in traffic until this is repaired. The fix is almost always simple: a new switch, bumper pad, or fuse.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1295 to identify the root cause.
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Quick Info
Category
Chassis
System
Brake System / Vehicle Lighting
Difficulty
Type
Manufacturer
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