U3003
Battery Voltage
U3003 is an OBD-II diagnostic trouble code meaning: Battery Voltage. Common causes: faulty generator, worn out battery. Estimated repair cost: $33–167.
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)
Symptoms
- Check Engine Light Is On
- Problems starting the engine
- Reduced power of electrical equipment
- Unstable engine operation
- Low battery
Causes
- Faulty generator
- Worn out battery
- Poor contacts or terminal corrosion
- Wiring damage
- Voltage regulator malfunction
How to Fix
- Check battery voltage with engine off and running
- Inspect terminals and contacts for corrosion
- Check the condition of the alternator belt
- Test the generator and voltage regulator
- Replace battery if necessary
Related codes
Error U3003 by Vehicle Brand
AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye
FAQ
What does the U3003 code mean?
U3003 is an OBD-II diagnostic trouble code that indicates: Battery Voltage
What causes a U3003 error code?
The most common causes of U3003 include: Faulty generator; Worn out battery; Poor contacts or terminal corrosion; Wiring damage.
How do I fix a U3003 diagnostic trouble code?
To fix U3003: Check battery voltage with engine off and running. Inspect terminals and contacts for corrosion. Check the condition of the alternator belt. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3003?
Yes, but get it checked soon
How much does it cost to fix U3003?
The estimated repair cost for U3003 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat