OBD Guide
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C0609

Park Brake Switch Circuit

C0609 is an OBD-II diagnostic trouble code meaning: Park Brake Switch Circuit. Common causes: parking brake limit switch faulty, open or short circuit in switch wiring. Estimated repair cost: $11–67.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$11–67 (est.)

Symptoms

  • The parking brake warning lamp stays on constantly or does not come on at all.
  • ESP/Auto Hold system does not work correctly
  • Hill Start Assist does not work
  • Sound signal when driving with the handbrake “supposedly” on
  • Parking brake error message on display

Causes

  • Parking brake limit switch faulty
  • Open or short circuit in switch wiring
  • Misadjustment or mechanical damage to the switch
  • Oxidation of connector contacts
  • EPB button malfunction (on vehicles with electric parking brake)

How to Fix

  1. Read the error codes and check the status of the parking brake switch with a scanner
  2. Check the operation of the switch - it should change state when the brake is turned on/off
  3. Measure the voltage and resistance at the switch contacts
  4. Inspect the wiring and connector for damage
  5. Replace or adjust the limit switch
  6. Reset the error and check for correct operation

Related codes

C0561C0562

Error C0609 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the C0609 code mean?

C0609 is an OBD-II diagnostic trouble code that indicates: Park Brake Switch Circuit

What causes a C0609 error code?

The most common causes of C0609 include: Parking brake limit switch faulty; Open or short circuit in switch wiring; Misadjustment or mechanical damage to the switch; Oxidation of connector contacts.

How do I fix a C0609 diagnostic trouble code?

To fix C0609: Read the error codes and check the status of the parking brake switch with a scanner. Check the operation of the switch - it should change state when the brake is turned on/off. Measure the voltage and resistance at the switch contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0609?

Yes, but get it checked soon

How much does it cost to fix C0609?

The estimated repair cost for C0609 is $11–67. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat