What are the typical symptoms of P0335?

Intermittent crank-no-start with no spark or injector pulse Stall without warning that clears on the next key cycle Tachometer needle dropping to zero while driving Extended cranking once the engine is hot RPM PID reading zero on the scan tool during a stall

What causes code P0335?

Crank sensor failed internally or with an open winding Signal wire chafed on the block or the shield ground open Reluctor ring cracked, loose, or with damaged teeth Debris or metal shavings packed on the sensor tip Sensor air gap wrong after a recent oil pan or transmission job

What recommended checks apply to P0335?

Back-probe supply, ground, and signal with the key on Scope the crank pattern while cranking to see pulses and gaps Remove the sensor and inspect the tip and reluctor teeth Compare crank and cam waveforms for correlation drift Repair chafed harness sections instead of only swapping the sensor

P0335Cars & SUVs

Moderate

P0335Crankshaft position sensor A circuit malfunction

Q: What does code P0335 mean?

P0335 reports that the crankshaft position sensor A circuit is not delivering a signal the ECM can use, and since that signal times both injection and spark, a hard fault often shows up as a no-start or a stall that clears on the next key cycle. Approach it as a circuit rather than a part: back-probe the connector for supply and ground, then scope the raw pattern while cranking to see whether pulses are present, ragged, or absent altogether. Reluctor rings crack, tone wheels work loose, and debris packed on the sensor tip is obvious once the sensor is out. Capture crank and cam waveforms together as well, because a stretched timing chain that shifts their correlation will set this code alongside a camshaft fault. Avoid long trips while an intermittent stall risk exists.

Content reviewed: August 2026Content reviewed by a heavy-duty technician. About our editorial approach

Check soon

— A crank signal fault can stall the engine anywhere, including in traffic — arrange repair promptly and avoid highway trips until the signal is proven stable.

What does this severity mean?

General guidance only — not a substitute for a professional inspection or official roadside / out-of-service criteria (e.g. CVSA OOSC) in your jurisdiction.

Part of system: Electrical sensing & powertrain inputs · Wire gauge & ampacity tool

Reports that the crankshaft position sensor A circuit is not delivering a signal the ECM can use, and since that signal times both injection and spark, a hard fault often shows up as a no-start or a stall that clears on the next key cycle. Approach it as a circuit rather than a part: back-probe the connector for supply and ground, then scope the raw pattern while cranking to see whether pulses are present, ragged, or absent altogether. Reluctor rings crack, tone wheels work loose, and debris packed on the sensor tip is obvious once the sensor is out. Capture crank and cam waveforms together as well, because a stretched timing chain that shifts their correlation will set this code alongside a camshaft fault. Avoid long trips while an intermittent stall risk exists.

Parts that may be involved

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These are generic search links — not a confirmed fit for your vehicle. Verify compatibility on Amazon (Garage / Confirmed Fit) or with the seller before buying.

Decode a VIN on the home page first to add year, make, and model to these Amazon searches.

Crankshaft position sensor with a new O-ring
Search for this part on Amazon(affiliate link)
Harness repair materials and shielded wire if chafed
Search for this part on Amazon(affiliate link)
Reluctor or tone ring if teeth are damaged
Search for this part on Amazon(affiliate link)

Vehicles often affected

Heat-related failures are common on sensors mounted near the exhaust, and correlation faults often follow a stretched timing chain on high-mileage engines.

Typical symptoms

Intermittent crank-no-start with no spark or injector pulse
Stall without warning that clears on the next key cycle
Tachometer needle dropping to zero while driving
Extended cranking once the engine is hot
RPM PID reading zero on the scan tool during a stall

Likely causes

Crank sensor failed internally or with an open winding
Signal wire chafed on the block or the shield ground open
Reluctor ring cracked, loose, or with damaged teeth
Debris or metal shavings packed on the sensor tip
Sensor air gap wrong after a recent oil pan or transmission job

Recommended checks

1
Back-probe supply, ground, and signal with the key on
2
Scope the crank pattern while cranking to see pulses and gaps
3
Remove the sensor and inspect the tip and reluctor teeth
4
Compare crank and cam waveforms for correlation drift
5
Repair chafed harness sections instead of only swapping the sensor

DIY vs professional

DIY: connector inspection, visual check of the sensor tip, replacement on accessible engines. Pro: waveform analysis and timing correlation work.

Related terms

Content reviewed by a heavy-duty technician. About our editorial approach