P0326 on Hyundai Tucson
Knock/Combustion Vibration Sensor A Circuit Range/Performance
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Hyundai Tucson context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0326.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0326 Means on Your Hyundai Tucson
P0326 is a diagnostic trouble code indicating: Knock/Combustion Vibration Sensor A Circuit Range/Performance. This code relates to the ignition system system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Hyundai Tucson Owner Reports
Source: NHTSA Complaints Database
"UNKNOWN FULLY Engine knocking out of the blue and then died. Car went limp while driving down the road. Starts and is loudly knocking. Throws codes P0011 and P0326 Cannot drive vehicle. I have not notified hyundai yet. There were no warning lights. Car ran perfectly fine. No issues."
"Took my 2017 Hyundai Tucson 1.6t engine into the service center on 8/21 for a check engine light and Bluelink notification of "A possible condition with your Engine Control System has been detected" that came on Sunday 8/18. Service center diagnosed P0326 ($159."
"The engine and engine management system of my 2018 Hyundai Tucson experienced repeated failures resulting in loss of propulsion and unsafe drivability."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Hyundai Tucson
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.