Fuel Temperature Sensor A Circuit High
The DURAMAX-P0183 (Duramax) diesel fault code means: Fuel Temperature Sensor A Circuit High. This is a moderate severity code.
- Keep driving?
- Yes, with caution
- DIY difficulty
- intermediate
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What Are the Symptoms of DURAMAX-P0183?
- Check Engine Light on
- Possible reduced power or rough running
- Possible hard starting
What Causes DURAMAX-P0183? (Most Likely First)
- Open signal or ground wire, or an unplugged connector High
- Failed sensor High
- Signal wire shorted to reference voltage Moderate
- Engine computer input fault Low
Can I Still Drive with DURAMAX-P0183?
Yes, with caution. DURAMAX-P0183 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P0183 mean on a Duramax?
P0183 means Fuel Temperature Sensor A Circuit High. The fuel temperature sensor signal is above its normal range, which usually points to an open circuit or a short to voltage.
Is P0183 a Duramax-specific code?
No. P0183 is a generic OBD-II code defined by SAE J2012, so it means the same thing on any vehicle that sets it. The exact conditions GM uses to set it on its diesels are in GM service information.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose DURAMAX-P0183?
Inspect the fuel temperature sensor connector and harness.
Check the fuel temperature sensor reference voltage, ground and signal against the service specification.
Check for other codes that share the same sensor reference voltage or ground.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines P0183 as a generic OBD-II code)
P0183 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:
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