OBD Guide
ENFRDEESPT

P05D5

Driver Mode Select Switch B Circuit Low

P05D5 is an OBD-II diagnostic trouble code meaning: Driver Mode Select Switch B Circuit Low. Common causes: switch b signal wire short to ground, poor contact or corrosion in switch connector. 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
  • No response when trying to change driving mode
  • Constant operation in default mode
  • Changed response to the gas pedal
  • Possible malfunctions of the adaptive suspension

Causes

  • Switch B signal wire short to ground
  • Poor contact or corrosion in switch connector
  • Switch B reference voltage open circuit
  • Mechanical damage to the wiring harness
  • Internal short in the switch itself

How to Fix

  1. Connect the scanner and read all active and saved codes
  2. Inspect switch connector B: check for corrosion, broken pins, traces of moisture
  3. Measure the voltage on the signal wire of the switch with the ignition on - expect a value above 0.2–0.5 V depending on the model
  4. Test the signal wire from the switch connector to the ECU for a short to ground.
  5. Check the switch separately with an ohmmeter or oscilloscope
  6. Repair wiring damage or replace mode switch B

Related codes

P05D4P05D6P05D7P05D0P05D1

Error P05D5 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P05D5 code mean?

P05D5 is an OBD-II diagnostic trouble code that indicates: Driver Mode Select Switch B Circuit Low

What causes a P05D5 error code?

The most common causes of P05D5 include: Switch B signal wire short to ground; Poor contact or corrosion in switch connector; Switch B reference voltage open circuit; Mechanical damage to the wiring harness.

How do I fix a P05D5 diagnostic trouble code?

To fix P05D5: Connect the scanner and read all active and saved codes. Inspect switch connector B: check for corrosion, broken pins, traces of moisture. Measure the voltage on the signal wire of the switch with the ignition on - expect a value above 0.2–0.5 V depending on the model. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P05D5?

Yes, but get it checked soon

How much does it cost to fix P05D5?

The estimated repair cost for P05D5 is $17–67. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat