U02BB
Lost Communications with EVAP System Purge Pump
U02BB is an OBD-II diagnostic trouble code meaning: Lost Communications with EVAP System Purge Pump. Common causes: open or short circuit in the purge pump circuit, faulty evap purge pump. Estimated repair cost: $28–89.
Symptoms
- Check Engine Light Is On
- The smell of gasoline in or around the car
- Increased fuel consumption
- Difficulties in engine idle speed
- Failed Emission Test Attempts
Causes
- Open or short circuit in the purge pump circuit
- Faulty EVAP purge pump
- Problems with the wiring harness or connectors
- Faulty pump relay or fuse
- ECU problems (rare)
How to Fix
- Check EVAP system fuses and relays
- Inspect the purge pump wiring harness and connectors
- Check the resistance and voltage on the purge pump
- Replace faulty purge pump if necessary
- Test the system after repair
Related codes
Error U02BB by Vehicle Brand
FAQ
What does the U02BB code mean?
U02BB is an OBD-II diagnostic trouble code that indicates: Lost Communications with EVAP System Purge Pump
What causes a U02BB error code?
The most common causes of U02BB include: Open or short circuit in the purge pump circuit; Faulty EVAP purge pump; Problems with the wiring harness or connectors; Faulty pump relay or fuse.
How do I fix a U02BB diagnostic trouble code?
To fix U02BB: Check EVAP system fuses and relays. Inspect the purge pump wiring harness and connectors. Check the resistance and voltage on the purge pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U02BB?
Yes, but get it checked soon
How much does it cost to fix U02BB?
The estimated repair cost for U02BB is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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