| DTC Data Sheet | |
| System | Powertrain |
| Standard | SAE J2012 / ISO 15031-6 |
| Fault type | Circuit High |
| Official meaning | Fuel Temperature Sensor "A" Circuit High Input |
Fuel temperature sensor voltage is above the expected maximum — typically an open signal, short to power, or open ground.
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P0183 Quick Answer
Fuel temperature sensor voltage is above the expected maximum — typically an open signal, short to power, or open ground.
What Does P0183 Mean?
Fuel Temperature Sensor "A" Circuit High Input. Fuel temperature sensor voltage is above the expected maximum — typically an open signal, short to power, or open ground.
Symptoms
- Check engine light
- Fuel temperature reading at the high limit
Common Causes
- Open signal wire or open sensor element
- Short to power on signal wire
- Open ground in the sensor circuit
- Connector terminal backed out
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.
- Disconnect sensor — voltage at the harness signal pin should drop near zero with the wire shorted to ground using a jumper. Any other behavior flags wiring.
- Verify ground continuity.
- Replace sensor if circuit is intact.
Possible Fixes
- Sensor replacement
- Wiring repair
Can I Still Drive With P0183?
The vehicle will usually still drive with P0183 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?
P0183 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.
Brand-Specific Guides for P0183
Manufacturer-specific diagnostic procedures with factory data and pin-level details for vehicles where this code commonly sets:
FAQ
Will P0183 clear itself?
Only if the underlying fault was intermittent and self-corrected. Most root causes are persistent and require physical repair.
Can I clear P0183 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 P0183 related to other codes?
Often, yes. Adjacent codes in the same circuit or system frequently set together — if P0183 is present, scan for related codes and address them as a group.