U1131
Invalid Or Missing Data For Fuel System
U1131 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Fuel System. Common causes: open or short circuit in the can bus, wiring harness damage. Estimated repair cost: $6–56.
Symptoms
- Check Engine light comes on
- Possible problems starting the engine
- Reduced engine power
- Unstable engine operation at idle
- Errors in other vehicle systems
Causes
- Open or short circuit in the CAN bus
- Wiring harness damage
- Poor contact in connectors
- Engine ECU malfunction
- Problems with module power supply
How to Fix
- Check the integrity of the CAN bus
- Inspect connectors and wiring harness
- Check the quality of connections between modules
- Scan all modules for errors
- If necessary, replace damaged wires or connectors
Related codes
FAQ
What does the U1131 code mean?
U1131 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Fuel System
What causes a U1131 error code?
The most common causes of U1131 include: Open or short circuit in the CAN bus; Wiring harness damage; Poor contact in connectors; Engine ECU malfunction.
How do I fix a U1131 diagnostic trouble code?
To fix U1131: Check the integrity of the CAN bus. Inspect connectors and wiring harness. Check the quality of connections between modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1131?
Limited driving only, diagnose soon
How much does it cost to fix U1131?
The estimated repair cost for U1131 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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