U1149
Lost Communication With Multi-Function Switch
U1149 is an OBD-II diagnostic trouble code meaning: Lost Communication With Multi-Function Switch. Common causes: multifunction switch malfunction, open or short circuit in the circuit. Estimated repair cost: $17–56.
Symptoms
- Turn signals don't work
- Windshield wipers do not function
- Problems with lighting (headlights, dimensions)
- Error message on the dashboard
- Incorrect operation of other functions controlled by the switch
Causes
- Multifunction switch malfunction
- Open or short circuit in the circuit
- Poor contact in connectors
- Problems with the ECU
- Corroded or damaged wiring
How to Fix
- Check the multifunction switch for malfunctions
- Inspect the wiring harness and connectors for damage
- Check continuity with a multimeter
- Clean contacts from corrosion
- Replace switch or wiring if necessary
Related codes
FAQ
What does the U1149 code mean?
U1149 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Multi-Function Switch
What causes a U1149 error code?
The most common causes of U1149 include: Multifunction switch malfunction; Open or short circuit in the circuit; Poor contact in connectors; Problems with the ECU.
How do I fix a U1149 diagnostic trouble code?
To fix U1149: Check the multifunction switch for malfunctions. Inspect the wiring harness and connectors for damage. Check continuity with a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1149?
Limited driving only, diagnose soon
How much does it cost to fix U1149?
The estimated repair cost for U1149 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat