Crankshaft Position Sensor A Circuit
What it means
P0335 means the ECM isn't getting a usable signal from the crankshaft position sensor, which it relies on to track engine speed and time ignition and fuel delivery. Because that signal is essential to running, this code can cause hard starting, sudden stalling, or a complete no-start — making it one to address quickly.
Can I keep driving? Risky — the ECM needs this signal to fire spark and fuel, so the engine may stall, run erratically, or fail to start at all. Fix before relying on the car.
Real-world scan data
Appears alongside · share of P0335 scans
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check-engine light on
- Hard starting, intermittent stalling, or a no-start
- Engine stumbles or cuts out, often when hot
- Reduced power and hesitation
Common causes
Most likely first
- Failed crankshaft position sensorLikely
- Damaged wiring or a poor connector at the sensorCommon
- Debris, damaged reluctor/tone ring, or misaligned sensorCommon
- Failed engine control module (rare)Less often
How to diagnose & fix
Work through it in order
- Scan for the code and check whether RPM registers on the scan tool while cranking — no RPM points to the sensor or its wiring.
- Inspect the sensor connector and harness for damage, corrosion, or oil contamination.
- Check the sensor mounting and reluctor/tone ring for debris or damage.
- Test the sensor's resistance or signal against spec; replace it if out of range. Clear and re-test.
P0335 by make
Based on commonly reported failure patterns across owner and repair communities, not on our scan data.
Chevrolet
On Chevrolet trucks and cars, the crankshaft sensor is a common cause of stalling or no-start. The sensor is often cheap but can be hard to reach.
Ford
On Ford vehicles, a failing crankshaft position sensor can cause stalling when hot and a no-start that clears after cooling. Check its connector and wiring first.
GMC
On GMC trucks and SUVs, the crankshaft sensor is a common cause of stalling or no-start. The sensor is often cheap but can be hard to reach.
Honda
On Hondas, a failing crankshaft position sensor is a commonly reported cause of stalling when hot or a no-start. Check its connector and wiring first.
Hyundai
On Hyundai models, a failing crankshaft position sensor is commonly reported and can cause stalling or hard starting. Check its connector and wiring first.
Jeep
On Jeeps, a failing crankshaft position sensor or damaged wiring is commonly reported and can cause stalling or no-start. Check its connector and wiring first.
Kia
On Kia models, a failing crankshaft position sensor is commonly reported and can cause stalling or hard starting. Check its connector and wiring first.
FAQ
Quick answers
Is it safe to drive with P0335?+
Can I just clear P0335?+
Related codes
Read more about this code
Read & clear P0335 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.