| DTC Data Sheet | |
| System | Powertrain |
| Standard | SAE J2012 / ISO 15031-6 |
| Fault type | Intermittent |
| Official meaning | Fuel Temperature Sensor "A" Circuit Intermittent |
Fuel temperature sensor signal disappears or glitches intermittently. Wiring vibration, connector pin fatigue, or marginal sensor failing on heat or movement.
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P0184 Quick Answer
Fuel temperature sensor signal disappears or glitches intermittently. Wiring vibration, connector pin fatigue, or marginal sensor failing on heat or movement.
What Does P0184 Mean?
Fuel Temperature Sensor "A" Circuit Intermittent. Fuel temperature sensor signal disappears or glitches intermittently. Wiring vibration, connector pin fatigue, or marginal sensor failing on heat or movement.
Symptoms
- Check engine light, often intermittent
- Fuel temperature PID drops or spikes randomly
Common Causes
- Wiring damage from rubbing or vibration
- Connector pin tension loss
- Marginal sensor failing with heat or movement
- Loose ground
Diagnosis Steps
You’ll need a scan tool capable of reading live powertrain data, a digital multimeter, and access to the wiring diagram for the specific platform.
- Wiggle-test the harness while monitoring live data.
- Heat-test the sensor with a hair dryer or heat gun.
- Inspect the connector pins for tension and corrosion.
Possible Fixes
- Connector pin or pigtail repair
- Sensor replacement
Can I Still Drive With P0184?
The vehicle will usually still drive with P0184 stored, but performance, drivability, or emissions will be degraded. The PCM may inhibit emissions monitors and limit closed-loop fueling adjustments. Drive to a workshop, but don’t ignore the code long-term — degraded sensor data can mask other faults and shorten catalyst life.
How Serious Is This Code?
P0184 is a moderate-priority fault. It will not prevent the engine from running but unaddressed it can damage the catalytic converter, reduce fuel economy, or cause failed emissions testing. Address within a few drive cycles.
FAQ
Will P0184 clear itself?
Only if the underlying fault was intermittent and self-corrected. Most root causes are persistent and require physical repair.
Can I clear P0184 without fixing it?
You can clear it with a scan tool, but it will return as soon as the fault condition reappears — typically within one or two drive cycles.
Is P0184 related to other codes?
Often, yes. Adjacent codes in the same circuit or system frequently set together — if P0184 is present, scan for related codes and address them as a group.