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Cranks but won't start
High — fix right away
You turn the key and the engine cranks normally, turning over and over, but it never catches and starts.
Possible causes
- No fuel pressure — Most likely · Codes: P0230P0231
Check first: Turn the key to ON without starting and listen for a short humming sound from the back of the car. No hum means the fuel pump may not be running. - Bad crankshaft position sensor — Most likely · Codes: P0335P0336
Check first: Watch the tachometer while the engine cranks. If the needle does not move at all, the crankshaft sensor may be bad. - Bad spark plugs or ignition coil — Possible · Codes: P0300P0351
Check first: Notice if the engine sputters or you smell fuel while cranking. Weak spark can keep the engine from catching.
Questions, answered
What usually causes this?
The most likely causes are: No fuel pressure; Bad crankshaft position sensor; Bad spark plugs or ignition coil. If you are not sure what is wrong, have it checked by a qualified technician.
Is it safe to drive with this symptom?
No — stop driving and get it checked. This symptom can mean a serious problem.
Not repair advice. If you are not sure what is wrong, have it checked by a qualified technician. Cars differ by make, model and year.
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