U0032
Vehicle Communication Bus A (+) High
U0032 is an OBD-II diagnostic trouble code meaning: Vehicle Communication Bus A (+) High. Common causes: short circuit in the can bus circuit, malfunction of one of the electronic control units. Estimated repair cost: $6–33.
Symptoms
- Unstable engine operation
- Lack of communication with some modules
- Check Engine light comes on
- Transmission problems
- Lost connection with diagnostic equipment
Causes
- Short circuit in the CAN bus circuit
- Malfunction of one of the electronic control units
- Damage to wiring or connectors
- Problems with contacts in CAN bus connectors
- Malfunction of the transmission control unit
How to Fix
- Check the integrity of the CAN bus wiring
- Check contacts in bus connectors
- Test the bus voltage with a multimeter
- Disable the modules one by one to find the faulty one.
- Check module grounding
Related codes
Error U0032 by Vehicle Brand
FAQ
What does the U0032 code mean?
U0032 is an OBD-II diagnostic trouble code that indicates: Vehicle Communication Bus A (+) High
What causes a U0032 error code?
The most common causes of U0032 include: Short circuit in the CAN bus circuit; Malfunction of one of the electronic control units; Damage to wiring or connectors; Problems with contacts in CAN bus connectors.
How do I fix a U0032 diagnostic trouble code?
To fix U0032: Check the integrity of the CAN bus wiring. Check contacts in bus connectors. Test the bus voltage with a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0032?
Yes, but get it checked soon
How much does it cost to fix U0032?
The estimated repair cost for U0032 is $6–33. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat