OBD Guide
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P05E3

Park Brake Sensor/Switch Circuit

P05E3 is an OBD-II diagnostic trouble code meaning: Park Brake Sensor/Switch Circuit. Common causes: faulty parking brake switch (mechanical damage or worn contacts), broken or shorted wiring in the area of the parking brake lever. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Check Engine Light and Parking Brake Light Illuminates
  • The parking brake warning light is constantly on or off
  • Disabling Hill Start Assist
  • Inability of the Electronic Parking Brake (EPB) to engage or release
  • Brake warning on display

Causes

  • Faulty parking brake switch (mechanical damage or worn contacts)
  • Broken or shorted wiring in the area of the parking brake lever
  • Moisture ingress and corrosion of the switch connector
  • Malfunction of the EPB control unit (in systems with electronic parking brake)
  • Incorrect adjustment of the switch after repair of the brake system

How to Fix

  1. Read fault codes; for EPB systems - use the diagnostic functions of the EPB unit
  2. Inspect the parking brake switch and its connector for mechanical damage, moisture, and corrosion.
  3. Check the presence of power and ground at the switch connector with the ignition on
  4. Measure the resistance of the switch in both positions (brake on / off)
  5. Check the signal wire from the switch to the ECU for open and short circuits
  6. Replace the switch or repair the wiring; for EPB - follow manufacturer's procedure

Related codes

P05E4P05E5P0571P0572C0001

Error P05E3 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P05E3 code mean?

P05E3 is an OBD-II diagnostic trouble code that indicates: Park Brake Sensor/Switch Circuit

What causes a P05E3 error code?

The most common causes of P05E3 include: Faulty parking brake switch (mechanical damage or worn contacts); Broken or shorted wiring in the area of the parking brake lever; Moisture ingress and corrosion of the switch connector; Malfunction of the EPB control unit (in systems with electronic parking brake).

How do I fix a P05E3 diagnostic trouble code?

To fix P05E3: Read fault codes; for EPB systems - use the diagnostic functions of the EPB unit. Inspect the parking brake switch and its connector for mechanical damage, moisture, and corrosion.. Check the presence of power and ground at the switch connector with the ignition on. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P05E3?

Yes, but get it checked soon

How much does it cost to fix P05E3?

The estimated repair cost for P05E3 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat