OBD Guide
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P0591

Cruise Control Multi-Function Input B Circuit Range/Performance

P0591 is an OBD-II diagnostic trouble code meaning: Cruise Control Multi-Function Input B Circuit Range/Performance. Common causes: wear of the contact group of the control unit button with a change in resistance, moisture or dirt getting into the steering wheel button block. Estimated repair cost: $17–89.

Severity
✅ Low
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable or unpredictable cruise control operation
  • Check Engine Light Illuminates
  • Cruise control sometimes works, sometimes not
  • Incorrect response to pressing control buttons
  • Spontaneous change in system behavior

Causes

  • Wear of the contact group of the control unit button with a change in resistance
  • Moisture or dirt getting into the steering wheel button block
  • Partial oxidation of contacts in a resistive circuit
  • Violation of the integrity of the steering wheel cable (partial break)
  • Cruise control module malfunction

How to Fix

  1. Connect the scanner and check the live data of the input signals when pressing each button
  2. Measure the resistance of the button block with a multimeter and compare with the norm according to the diagram
  3. Inspect the button block for traces of moisture, oxidation or mechanical damage
  4. Check the steering wheel cable for integrity
  5. Clean the connector contacts with contact cleaning spray.
  6. If necessary, replace the steering wheel button block

Related codes

P0590P0592P0593P0575P0565

Error P0591 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0591 code mean?

P0591 is an OBD-II diagnostic trouble code that indicates: Cruise Control Multi-Function Input B Circuit Range/Performance

What causes a P0591 error code?

The most common causes of P0591 include: Wear of the contact group of the control unit button with a change in resistance; Moisture or dirt getting into the steering wheel button block; Partial oxidation of contacts in a resistive circuit; Violation of the integrity of the steering wheel cable (partial break).

How do I fix a P0591 diagnostic trouble code?

To fix P0591: Connect the scanner and check the live data of the input signals when pressing each button. Measure the resistance of the button block with a multimeter and compare with the norm according to the diagram. Inspect the button block for traces of moisture, oxidation or mechanical damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0591?

Do not drive — repair immediately

How much does it cost to fix P0591?

The estimated repair cost for P0591 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat