Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSHYUNDAI2011EQUUS SIGNATUREREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS (3 OF 3)DTC U0001: HIGH SPEED CAN COMMUNICATION BUS OFFGENERAL INFORMATIONSPECIFICATION

2011 Hyundai Equus Signature

General Information: Specification

2011 Hyundai Equus SignatureSECTION Specification

ITEM SPECIFICATIONS CHART

Communication Format	DIGITAL "0"		DIGITAL "1" (BUS IDLE)		CAN Communication Line Resistance
Communication Format	HIGH	LOW	HIGH	LOW	ECM	Cluster
CAN 2.0B	3.5V	1.5V	2.5V	2.5V	120Ω (20°C)	120Ω (20°C)

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.