OBD Guide
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C1157

Park Brake Actuator Assembly Switch Applied Circuit Failure

C1157 is an OBD-II diagnostic trouble code meaning: Park Brake Actuator Assembly Switch Applied Circuit Failure. Common causes: open or short circuit in the switch circuit, parking brake switch malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • The parking brake indicator on the dashboard is on
  • Incorrect operation of the parking brake system
  • The appearance of other related errors in the system

Causes

  • Open or short circuit in the switch circuit
  • Parking brake switch malfunction
  • Wiring harness damage
  • Poor contact in connectors
  • Problems with the control unit

How to Fix

  1. Check the integrity of the wiring harness and connectors
  2. Test the parking brake switch
  3. Check resistance and voltage in the circuit
  4. If necessary, replace the switch or repair the wiring harness
  5. Reset the error and check if it returns

Related codes

C1155C1156C1158

FAQ

What does the C1157 code mean?

C1157 is an OBD-II diagnostic trouble code that indicates: Park Brake Actuator Assembly Switch Applied Circuit Failure

What causes a C1157 error code?

The most common causes of C1157 include: Open or short circuit in the switch circuit; Parking brake switch malfunction; Wiring harness damage; Poor contact in connectors.

How do I fix a C1157 diagnostic trouble code?

To fix C1157: Check the integrity of the wiring harness and connectors. Test the parking brake switch. Check resistance and voltage in the circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1157?

Limited driving only, diagnose soon

How much does it cost to fix C1157?

The estimated repair cost for C1157 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat