Crankshaft Position Sensor "A" Circuit
The DURAMAX-P0335 (Duramax) diesel fault code means: Crankshaft Position Sensor "A" Circuit. This is a serious severity code.
- Keep driving?
- Yes, with caution
- DIY difficulty
- intermediate
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What Are the Symptoms of DURAMAX-P0335?
- Check Engine Light on
- Hard starting, long cranking or no start
- Possible stalling or rough running
What Causes DURAMAX-P0335? (Most Likely First)
- Failed sensor High
- Open or shorted wiring High
- Loose or corroded connector Moderate
- Damaged reluctor or tone wheel Low
Can I Still Drive with DURAMAX-P0335?
Yes, with caution. DURAMAX-P0335 is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P0335 mean on a Duramax?
P0335 means Crankshaft Position Sensor "A" Circuit. The engine computer has detected an electrical fault in the crankshaft position sensor "A" circuit.
Is P0335 a Duramax-specific code?
No. P0335 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-P0335?
Inspect the crankshaft position sensor "A" connector and harness.
Check the crankshaft position sensor "A" 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 P0335 as a generic OBD-II code)
P0335 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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