Engine management · Severity: High
P0335 — Crankshaft Position Sensor A Circuit
The ECU sees no signal or an implausible signal from the crankshaft position sensor.
Common symptoms
- Cranks but no start
- Stalling when hot
- No RPM on tachometer
Likely causes
- Failed crank sensor
- Damaged wiring or connector
- Damaged reluctor ring
- Excessive air gap
First test to run
Check RPM on the scan tool while cranking; if zero, scope the sensor signal directly at the connector.
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