P0119moderate severityPowertrain
ECT Sensor 1 Circuit Intermittent
on 2010 Toyota Highlander 2.7L I4 · FWD
What this code means
The ECT sensor signal is intermittent.
Symptoms
- Check Engine Light (intermittent)
- Erratic temp gauge
- Fan cycling issues
Common causes
- Loose connector
- Damaged wiring
- Intermittent sensor failure
Diagnostic steps
- Wiggle test
- Monitor ECT signal
- Inspect connector
Repair notes
Repair connector or wiring.
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