OBD Guide
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P05D4

Driver Mode Select Switch B Circuit

P05D4 is an OBD-II diagnostic trouble code meaning: Driver Mode Select Switch B Circuit. Common causes: open or short circuit in mode switch b circuit, faulty driving mode switch b. Estimated repair cost: $17–67.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–67 (est.)

Symptoms

  • Check Engine Light Is On
  • Lack of response to switching driving modes
  • Fixation in one transmission operating mode
  • Possible error messages on the display
  • Changing suspension or steering behavior

Causes

  • Open or short circuit in mode switch B circuit
  • Faulty driving mode switch B
  • Oxidation or damage to switch connector B
  • Violation of the integrity of the wiring harness
  • ECU malfunction (rare)

How to Fix

  1. Read all codes using a diagnostic scanner
  2. Check for power and ground at switch connector B
  3. Check the signal wire from the switch to the ECU for open and short circuits
  4. Inspect the connector for oxidation, kinks and damage to the contacts.
  5. Check the functionality of the switch with an ohmmeter according to the manufacturer’s table
  6. Replace the switch or repair the wiring based on the test results

Related codes

P05D2P05D3P05D5P05D6P05D7

Error P05D4 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P05D4 code mean?

P05D4 is an OBD-II diagnostic trouble code that indicates: Driver Mode Select Switch B Circuit

What causes a P05D4 error code?

The most common causes of P05D4 include: Open or short circuit in mode switch B circuit; Faulty driving mode switch B; Oxidation or damage to switch connector B; Violation of the integrity of the wiring harness.

How do I fix a P05D4 diagnostic trouble code?

To fix P05D4: Read all codes using a diagnostic scanner. Check for power and ground at switch connector B. Check the signal wire from the switch to the ECU for open and short circuits. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P05D4?

Yes, but get it checked soon

How much does it cost to fix P05D4?

The estimated repair cost for P05D4 is $17–67. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat