U02BA
Lost Communication With Hybrid/EV Electronics Coolant Pump B
U02BA is an OBD-II diagnostic trouble code meaning: Lost Communication With Hybrid/EV Electronics Coolant Pump B. Common causes: open or short circuit in the pump circuit, cooling pump malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced hybrid system efficiency
- Overheating of electronic components
- Power Loss
- Inability to switch to electric mode
Causes
- Open or short circuit in the pump circuit
- Cooling pump malfunction
- Problems with connectors or wiring harness
- Control unit malfunction
- Problems in the CAN network
How to Fix
- Check fuses and pump relays
- Check the integrity of the circuit and connectors
- Check the functionality of the cooling pump
- Check CAN bus signals
- Replace the faulty pump if necessary
Related codes
Error U02BA by Vehicle Brand
FAQ
What does the U02BA code mean?
U02BA is an OBD-II diagnostic trouble code that indicates: Lost Communication With Hybrid/EV Electronics Coolant Pump B
What causes a U02BA error code?
The most common causes of U02BA include: Open or short circuit in the pump circuit; Cooling pump malfunction; Problems with connectors or wiring harness; Control unit malfunction.
How do I fix a U02BA diagnostic trouble code?
To fix U02BA: Check fuses and pump relays. Check the integrity of the circuit and connectors. Check the functionality of the cooling pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U02BA?
Do not drive — repair immediately
How much does it cost to fix U02BA?
The estimated repair cost for U02BA is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat