U0673
Lost Communication With Ion Sense Module
U0673 is an OBD-II diagnostic trouble code meaning: Lost Communication With Ion Sense Module. Common causes: open or short circuit in the ion sensing module circuit, ion sensing module malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine operation at idle
- Problems starting the engine
Causes
- Open or short circuit in the ion sensing module circuit
- Ion sensing module malfunction
- Problems with the wiring harness or connectors
- Engine ECU malfunction
- Module power problems
How to Fix
- Check the integrity of the wiring harness and connectors
- Check the supply voltage of the ion sensing module
- Scan the module for additional errors
- Replace ion sensing module if necessary
- Check and, if necessary, replace the engine ECU
Related codes
Error U0673 by Vehicle Brand
FAQ
What does the U0673 code mean?
U0673 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Ion Sense Module
What causes a U0673 error code?
The most common causes of U0673 include: Open or short circuit in the ion sensing module circuit; Ion sensing module malfunction; Problems with the wiring harness or connectors; Engine ECU malfunction.
How do I fix a U0673 diagnostic trouble code?
To fix U0673: Check the integrity of the wiring harness and connectors. Check the supply voltage of the ion sensing module. Scan the module for additional errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0673?
Yes, but get it checked soon
How much does it cost to fix U0673?
The estimated repair cost for U0673 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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