Hard Starting or No Start - Nissan Altima 2019
The engine cranks but takes longer to start, and the condition is worsening. This typically indicates a fuel, ignition, or battery/charging system issue.
Diagnosis Details
Possible Causes
Weak battery or poor battery connections
Failing fuel pump or clogged fuel filter
Faulty crankshaft position sensor or camshaft position sensor
Dirty or failing fuel injectors
Ignition system issues (spark plugs, coils)
Related OBD-II Codes
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What You Should Do
Start by checking battery voltage and cleaning terminals.
If battery is weak, test and replace if needed.
If battery is good, check fuel pressure and listen for fuel pump prime.
Scan for diagnostic trouble codes (DTCs) to identify sensor or system faults.
Inspect spark plugs and coils if codes point to misfires.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
