U0052
Vehicle Communication Bus C (-) Low
U0052 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus C (-) Low. Common causes: broken or damaged can c bus wires, short circuit in can c bus circuit. Estimated repair cost: $6–33.
Symptoms
- Unstable operation of electronic systems
- Check Engine light comes on
- Problems starting the engine
- Lost connection with some sensors
Causes
- Broken or damaged CAN C bus wires
- Short circuit in CAN C bus circuit
- Malfunction of one of the ECUs connected to the CAN C bus
- Poor contact in CAN C bus connectors
- Problems with power supply or grounding of the ECU
How to Fix
- Check the integrity of the CAN C bus wires
- Check connectors and contacts for oxidation or damage
- Check the voltage and resistance in the CAN C bus circuit
- Diagnose ECUs connected to the CAN C bus
- Replace damaged wires or connectors
Related codes
Error U0052 by Vehicle Brand
FAQ
What does the U0052 code mean?
U0052 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus C (-) Low
What causes a U0052 error code?
The most common causes of U0052 include: Broken or damaged CAN C bus wires; Short circuit in CAN C bus circuit; Malfunction of one of the ECUs connected to the CAN C bus; Poor contact in CAN C bus connectors.
How do I fix a U0052 diagnostic trouble code?
To fix U0052: Check the integrity of the CAN C bus wires. Check connectors and contacts for oxidation or damage. Check the voltage and resistance in the CAN C bus circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0052?
Yes, but get it checked soon
How much does it cost to fix U0052?
The estimated repair cost for U0052 is $6–33. Actual cost depends on your vehicle, location, and labor rates.
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