OBD Guide
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U02A7

Lost Communication With Engine Sound Control 1

U02A7 is an OBD-II diagnostic trouble code meaning: Lost Communication With Engine Sound Control 1. Common causes: broken or damaged wiring harness, engine sound control module malfunction. Estimated repair cost: $56–167.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Changing the sound of the engine
  • Lack of active sound
  • The Check Engine light comes on
  • Possible errors in related systems
  • Reduced functionality of the multimedia system

Causes

  • Broken or damaged wiring harness
  • Engine Sound Control Module Malfunction
  • Problems with module power or grounding
  • Software failure in the ECU
  • Corrosion of contacts in connectors

How to Fix

  1. Check the integrity of the wiring harness to the sound module
  2. Check power supply and grounding of the module
  3. Inspect and clean connector contacts
  4. Flash or update ECU software
  5. Replace engine sound control module if necessary

Related codes

U02A6U02A8U02A9

Error U02A7 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U02A7 code mean?

U02A7 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Engine Sound Control 1

What causes a U02A7 error code?

The most common causes of U02A7 include: Broken or damaged wiring harness; Engine Sound Control Module Malfunction; Problems with module power or grounding; Software failure in the ECU.

How do I fix a U02A7 diagnostic trouble code?

To fix U02A7: Check the integrity of the wiring harness to the sound module. Check power supply and grounding of the module. Inspect and clean connector contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U02A7?

Yes, but get it checked soon

How much does it cost to fix U02A7?

The estimated repair cost for U02A7 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat