U0022
Low Speed CAN Communication Bus (+) Low
U0022 is an OBD-II diagnostic trouble code meaning: Low Speed CAN Communication Bus (+) Low. Common causes: broken or damaged can bus wires, poor contact in can bus connectors. Estimated repair cost: $6–56.
Symptoms
- Incorrect operation of the vehicle's electronic systems
- Malfunction indicator light comes on
- Problems starting the engine
- Lost connection with some modules
Causes
- Broken or damaged CAN bus wires
- Poor contact in CAN bus connectors
- Fault in one of the modules connected to the bus
- Short circuit in the CAN bus circuit
- Problems with module power supply
How to Fix
- Check the integrity of the CAN bus wiring
- Inspect and clean CAN bus connectors
- Check the functionality of the modules connected to the bus
- Check the voltage on the CAN bus
- Replace damaged wires or connectors
Related codes
Error U0022 by Vehicle Brand
FAQ
What does the U0022 code mean?
U0022 is an OBD-II diagnostic trouble code that indicates: Low Speed CAN Communication Bus (+) Low
What causes a U0022 error code?
The most common causes of U0022 include: Broken or damaged CAN bus wires; Poor contact in CAN bus connectors; Fault in one of the modules connected to the bus; Short circuit in the CAN bus circuit.
How do I fix a U0022 diagnostic trouble code?
To fix U0022: Check the integrity of the CAN bus wiring. Inspect and clean CAN bus connectors. Check the functionality of the modules connected to the bus. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0022?
Yes, but get it checked soon
How much does it cost to fix U0022?
The estimated repair cost for U0022 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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