OBD Guide
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U017B

Lost Communication With Restraints System Sensor L

U017B is an OBD-II diagnostic trouble code meaning: Lost Communication With Restraints System Sensor L. Common causes: open or short circuit in the sensor circuit, security sensor malfunction. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • The airbag light on the dashboard is on
  • The safety system may not work in an accident
  • The error is stored in the ECU memory
  • Possible problems with system diagnostics

Causes

  • Open or short circuit in the sensor circuit
  • Security sensor malfunction
  • Poor contact in the sensor connector
  • Wiring harness damage
  • Problems with the security ECU

How to Fix

  1. Check the integrity of the wiring harness to the sensor
  2. Inspect and clean the sensor connector contacts
  3. Check sensor resistance
  4. Scan the system for other fault codes
  5. Repair only from an authorized dealer

Related codes

U017AU017CU0168

Error U017B by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U017B code mean?

U017B is an OBD-II diagnostic trouble code that indicates: Lost Communication With Restraints System Sensor L

What causes a U017B error code?

The most common causes of U017B include: Open or short circuit in the sensor circuit; Security sensor malfunction; Poor contact in the sensor connector; Wiring harness damage.

How do I fix a U017B diagnostic trouble code?

To fix U017B: Check the integrity of the wiring harness to the sensor. Inspect and clean the sensor connector contacts. Check sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U017B?

Do not drive — repair immediately

How much does it cost to fix U017B?

The estimated repair cost for U017B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat