OBD Guide
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C1002

Brake Switch Stuck High

C1002 is an OBD-II diagnostic trouble code meaning: Brake Switch Stuck High. Common causes: mechanical sticking of the brake pedal sensor, short circuit in the sensor circuit. Estimated repair cost: $22–89.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$22–89 (est.)

Symptoms

  • Steady brake lights
  • Inability to turn on cruise control
  • Problems starting the engine (automatic)
  • Errors in related systems (ABS, ESP)

Causes

  • Mechanical sticking of the brake pedal sensor
  • Short circuit in the sensor circuit
  • Broken or damaged wiring harness
  • Malfunction of the ABS/ESP control unit

How to Fix

  1. Visually check the position of the brake pedal and sensor
  2. Check the pedal mechanism for binding
  3. Test the sensor with a multimeter
  4. Check the integrity of the wiring harness
  5. If necessary, replace the brake pedal sensor

Related codes

C1001C1003B1342

FAQ

What does the C1002 code mean?

C1002 is an OBD-II diagnostic trouble code that indicates: Brake Switch Stuck High

What causes a C1002 error code?

The most common causes of C1002 include: Mechanical sticking of the brake pedal sensor; Short circuit in the sensor circuit; Broken or damaged wiring harness; Malfunction of the ABS/ESP control unit.

How do I fix a C1002 diagnostic trouble code?

To fix C1002: Visually check the position of the brake pedal and sensor. Check the pedal mechanism for binding. Test the sensor with a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1002?

Do not drive — repair immediately

How much does it cost to fix C1002?

The estimated repair cost for C1002 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat