U0017
Medium Speed CAN Communication Bus (-) High
U0017 is an OBD-II diagnostic trouble code meaning: Medium Speed CAN Communication Bus (-) High. Common causes: open or short circuit in can circuit (-), damage to the can bus wiring harness. Estimated repair cost: $6–56.
Symptoms
- Check Engine light comes on
- Incorrect operation of the vehicle's electronic systems
- Loss of communication with some control units
- Switching systems into emergency mode
- Problems starting the engine
Causes
- Open or short circuit in CAN circuit (-)
- Damage to the CAN bus wiring harness
- Fault in one of the modules connected to the bus
- Corrosion or poor contact in connectors
- Problems with power supply to CAN modules
How to Fix
- Check the integrity of the CAN bus wires
- Inspect connectors and contacts for corrosion
- Check the voltage and resistance in the CAN circuit
- Disable the modules one by one to identify the faulty one.
- Check the grounding of electronic units
Related codes
Error U0017 by Vehicle Brand
FAQ
What does the U0017 code mean?
U0017 is an OBD-II diagnostic trouble code that indicates: Medium Speed CAN Communication Bus (-) High
What causes a U0017 error code?
The most common causes of U0017 include: Open or short circuit in CAN circuit (-); Damage to the CAN bus wiring harness; Fault in one of the modules connected to the bus; Corrosion or poor contact in connectors.
How do I fix a U0017 diagnostic trouble code?
To fix U0017: Check the integrity of the CAN bus wires. Inspect connectors and contacts for corrosion. Check the voltage and resistance in the CAN circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0017?
Do not drive — repair immediately
How much does it cost to fix U0017?
The estimated repair cost for U0017 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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