Kia Rio knock sensor issue indicated by engine light on Kia Rio

Submitted by chritzko · Jun 23, 2025
Published by RepairPal

Problem overview

Some Kia Rio owners report experiencing issues related to a malfunctioning knock sensor, which can trigger the check engine light. Common trouble codes associated with this problem range from P0325 to P0334. Symptoms of a bad knock sensor include engine power loss, increased fuel consumption, and noticeable engine knocking or detonation. Ignoring these signs can lead to serious damage to the engine, as the engine control unit may adjust parameters like ignition timing to compensate for the knock sensor issue, resulting in sluggish performance. Additionally, owners may hear a knocking or pinging sound from the engine, particularly during acceleration or when climbing hills. If the knock sensor is faulty, the check engine light may illuminate as either a solid or flashing warning. It is recommended that owners experiencing these symptoms have their Kia Rio inspected by a qualified mechanic to diagnose and resolve any knock sensor issues promptly.

2 people reported this problem
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Kia Rio vehicles with this problem

1 model year affected
Average mileage: 41,000 miles
(41,000 - 41,000)

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