P0184low severityPowertrain
Fuel Temperature Sensor A Circuit Intermittent
on 2009 Volkswagen CC 3.6L V6 · AWD
What this code means
The fuel temperature sensor signal is cutting in and out intermittently. This is usually caused by a loose or corroded connection rather than a failed sensor.
Symptoms
- Check engine light on
- Erratic fuel trim
- Occasional rough running
Common causes
- Loose or corroded connector
- Damaged sensor wiring
- Failing fuel temperature sensor
- Faulty PCM
Diagnostic steps
- Scan for stored and pending codes
- Inspect sensor connector and wiring
- Wiggle-test harness while monitoring signal
- Replace sensor if signal drops out
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