U029F
Lost Communication With Evaporative Emission System Leak Detection Control Module
U029F is an OBD-II diagnostic trouble code meaning: Lost Communication With Evaporative Emission System Leak Detection Control Module. Common causes: open or short circuit in the communication circuit, evap leak control module malfunction. Estimated repair cost: $28–167.
Symptoms
- Check Engine Light Is On
- Possible problems starting the engine
- Increased fuel consumption
- The car may go into emergency mode
- Errors in the EVAP system during diagnosis
Causes
- Open or short circuit in the communication circuit
- EVAP leak control module malfunction
- Problems with module power supply (blown fuse)
- Poor contact in wiring connectors
- ECU malfunction (rare)
How to Fix
- Check fuses related to the EVAP system
- Inspect the wiring harness and connectors for damage.
- Check the power and ground of the leakage control module
- Scan the EVAP module for additional errors
- If necessary, replace the EVAP leak control module
Related codes
Error U029F by Vehicle Brand
FAQ
What does the U029F code mean?
U029F is an OBD-II diagnostic trouble code that indicates: Lost Communication With Evaporative Emission System Leak Detection Control Module
What causes a U029F error code?
The most common causes of U029F include: Open or short circuit in the communication circuit; EVAP leak control module malfunction; Problems with module power supply (blown fuse); Poor contact in wiring connectors.
How do I fix a U029F diagnostic trouble code?
To fix U029F: Check fuses related to the EVAP system. Inspect the wiring harness and connectors for damage.. Check the power and ground of the leakage control module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U029F?
Yes, but get it checked soon
How much does it cost to fix U029F?
The estimated repair cost for U029F is $28–167. Actual cost depends on your vehicle, location, and labor rates.
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