Hyundai XG350 hard to start and stalls, possible crankshaft sensor issue affecting check engine light on Hyundai XG350

Submitted by Dago1957 · Jun 23, 2025
Published by RepairPal

Problem overview

Some Hyundai XG350 owners report experiencing hard start and stalling issues, which may indicate a problem with the crankshaft position sensor. Symptoms such as difficulty starting the engine and stalling are common signs of a faulty sensor, which is crucial for smooth engine operation. When this sensor malfunctions, it can lead to engine hesitation during acceleration and may even leave owners stranded with a non-starting vehicle. Additionally, a malfunctioning crankshaft sensor often triggers the check engine light, signaling the need for attention. To accurately diagnose the issue, some owners recommend having the crankshaft position sensor checked by a professional, who can utilize a scan tool to identify any related trouble codes. Promptly addressing a faulty sensor is essential to prevent further damage and costly repairs, as unresolved issues can escalate to engine misfires, backfires, and starting failures. In cases where the crankshaft sensor is confirmed as the problem, replacement can vary in complexity, and it may also be wise to consider changing the timing belt if it has exceeded 35,000 miles. Overall, if your Hyundai XG350 is hard to start, frequently stalls, and the check engine light is illuminated, it is advisable to have the crankshaft position sensor inspected and potentially replaced to ensure proper vehicle operation.

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